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Finding the Fourth Proportional to 8,869.29, 12,240.23 and 5,143.29

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Solution

The fourth proportional to 8,869.29, 12,240.23 and 5,143.29 is: 7,098.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,869.29 : 12,240.23 = 5,143.29 : x
  2. Step 2: Convert to fraction form
    8,869.29/12,240.23 = 5,143.29/x
  3. Step 3: Cross multiply
    8,869.29x = 12,240.23 × 5,143.29
  4. Step 4: Simplify right side
    8,869.29x = 62,955,026.84
  5. Step 5: Solve for x
    x = 62,955,026.84/8,869.29
  6. Step 6: Final answer
    x = 7,098.09

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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.