Home / 7,385.72-11,082.70-3,490.12

Finding the Fourth Proportional to 7,385.72, 11,082.70 and 3,490.12

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Solution

The fourth proportional to 7,385.72, 11,082.70 and 3,490.12 is: 5,237.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,385.72 : 11,082.70 = 3,490.12 : x
  2. Step 2: Convert to fraction form
    7,385.72/11,082.70 = 3,490.12/x
  3. Step 3: Cross multiply
    7,385.72x = 11,082.70 × 3,490.12
  4. Step 4: Simplify right side
    7,385.72x = 38,679,952.92
  5. Step 5: Solve for x
    x = 38,679,952.92/7,385.72
  6. Step 6: Final answer
    x = 5,237.13

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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.