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Finding the Fourth Proportional to 8,132.76, 11,223.20 and 4,406.76

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Solution

The fourth proportional to 8,132.76, 11,223.20 and 4,406.76 is: 6,081.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,132.76 : 11,223.20 = 4,406.76 : x
  2. Step 2: Convert to fraction form
    8,132.76/11,223.20 = 4,406.76/x
  3. Step 3: Cross multiply
    8,132.76x = 11,223.20 × 4,406.76
  4. Step 4: Simplify right side
    8,132.76x = 49,457,948.83
  5. Step 5: Solve for x
    x = 49,457,948.83/8,132.76
  6. Step 6: Final answer
    x = 6,081.32

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Find fourth proportional to 4,066.38, 5,611.60 and 2,203.38
Half scale
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Double scale
Find fourth proportional to 8,133.76, 11,224.58 and 4,407.76
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.