Home / 8,972.76-13,460.82-3,129.24

Finding the Fourth Proportional to 8,972.76, 13,460.82 and 3,129.24

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Solution

The fourth proportional to 8,972.76, 13,460.82 and 3,129.24 is: 4,694.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,972.76 : 13,460.82 = 3,129.24 : x
  2. Step 2: Convert to fraction form
    8,972.76/13,460.82 = 3,129.24/x
  3. Step 3: Cross multiply
    8,972.76x = 13,460.82 × 3,129.24
  4. Step 4: Simplify right side
    8,972.76x = 42,122,136.38
  5. Step 5: Solve for x
    x = 42,122,136.38/8,972.76
  6. Step 6: Final answer
    x = 4,694.45

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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.