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Finding the Fourth Proportional to 8,687.81, 13,031.69 and 6,102.29

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Solution

The fourth proportional to 8,687.81, 13,031.69 and 6,102.29 is: 9,153.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,687.81 : 13,031.69 = 6,102.29 : x
  2. Step 2: Convert to fraction form
    8,687.81/13,031.69 = 6,102.29/x
  3. Step 3: Cross multiply
    8,687.81x = 13,031.69 × 6,102.29
  4. Step 4: Simplify right side
    8,687.81x = 79,523,055.90
  5. Step 5: Solve for x
    x = 79,523,055.90/8,687.81
  6. Step 6: Final answer
    x = 9,153.41

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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.