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Finding the Fourth Proportional to 8,077.76, 12,114.30 and 3,146.30

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Solution

The fourth proportional to 8,077.76, 12,114.30 and 3,146.30 is: 4,718.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,077.76 : 12,114.30 = 3,146.30 : x
  2. Step 2: Convert to fraction form
    8,077.76/12,114.30 = 3,146.30/x
  3. Step 3: Cross multiply
    8,077.76x = 12,114.30 × 3,146.30
  4. Step 4: Simplify right side
    8,077.76x = 38,115,222.09
  5. Step 5: Solve for x
    x = 38,115,222.09/8,077.76
  6. Step 6: Final answer
    x = 4,718.54

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.