Home / 8,916.62-12,306.45-5,139.11

Finding the Fourth Proportional to 8,916.62, 12,306.45 and 5,139.11

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Solution

The fourth proportional to 8,916.62, 12,306.45 and 5,139.11 is: 7,092.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,916.62 : 12,306.45 = 5,139.11 : x
  2. Step 2: Convert to fraction form
    8,916.62/12,306.45 = 5,139.11/x
  3. Step 3: Cross multiply
    8,916.62x = 12,306.45 × 5,139.11
  4. Step 4: Simplify right side
    8,916.62x = 63,244,138.73
  5. Step 5: Solve for x
    x = 63,244,138.73/8,916.62
  6. Step 6: Final answer
    x = 7,092.84

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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.