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Finding the Fourth Proportional to 8,113.81, 11,197.07 and 4,387.81

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Solution

The fourth proportional to 8,113.81, 11,197.07 and 4,387.81 is: 6,055.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,113.81 : 11,197.07 = 4,387.81 : x
  2. Step 2: Convert to fraction form
    8,113.81/11,197.07 = 4,387.81/x
  3. Step 3: Cross multiply
    8,113.81x = 11,197.07 × 4,387.81
  4. Step 4: Simplify right side
    8,113.81x = 49,130,615.72
  5. Step 5: Solve for x
    x = 49,130,615.72/8,113.81
  6. Step 6: Final answer
    x = 6,055.18

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Half scale
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Double scale
Find fourth proportional to 8,114.81, 11,198.45 and 4,388.81
Similar ratio
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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.