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Finding the Fourth Proportional to 7,372.71, 11,063.70 and 2,990.19

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Solution

The fourth proportional to 7,372.71, 11,063.70 and 2,990.19 is: 4,487.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,372.71 : 11,063.70 = 2,990.19 : x
  2. Step 2: Convert to fraction form
    7,372.71/11,063.70 = 2,990.19/x
  3. Step 3: Cross multiply
    7,372.71x = 11,063.70 × 2,990.19
  4. Step 4: Simplify right side
    7,372.71x = 33,082,565.10
  5. Step 5: Solve for x
    x = 33,082,565.10/7,372.71
  6. Step 6: Final answer
    x = 4,487.16

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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.