Home / 7,972.40-11,002.92-4,437.20

Finding the Fourth Proportional to 7,972.40, 11,002.92 and 4,437.20

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Solution

The fourth proportional to 7,972.40, 11,002.92 and 4,437.20 is: 6,123.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,972.40 : 11,002.92 = 4,437.20 : x
  2. Step 2: Convert to fraction form
    7,972.40/11,002.92 = 4,437.20/x
  3. Step 3: Cross multiply
    7,972.40x = 11,002.92 × 4,437.20
  4. Step 4: Simplify right side
    7,972.40x = 48,822,156.62
  5. Step 5: Solve for x
    x = 48,822,156.62/7,972.40
  6. Step 6: Final answer
    x = 6,123.90

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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.