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Finding the Fourth Proportional to 10,761.78, 16,136.88 and 3,264.30

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Solution

The fourth proportional to 10,761.78, 16,136.88 and 3,264.30 is: 4,894.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,761.78 : 16,136.88 = 3,264.30 : x
  2. Step 2: Convert to fraction form
    10,761.78/16,136.88 = 3,264.30/x
  3. Step 3: Cross multiply
    10,761.78x = 16,136.88 × 3,264.30
  4. Step 4: Simplify right side
    10,761.78x = 52,675,617.38
  5. Step 5: Solve for x
    x = 52,675,617.38/10,761.78
  6. Step 6: Final answer
    x = 4,894.69

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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.