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Finding the Fourth Proportional to 7,381.76, 11,073.92 and 3,684.16

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Solution

The fourth proportional to 7,381.76, 11,073.92 and 3,684.16 is: 5,526.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,381.76 : 11,073.92 = 3,684.16 : x
  2. Step 2: Convert to fraction form
    7,381.76/11,073.92 = 3,684.16/x
  3. Step 3: Cross multiply
    7,381.76x = 11,073.92 × 3,684.16
  4. Step 4: Simplify right side
    7,381.76x = 40,798,093.11
  5. Step 5: Solve for x
    x = 40,798,093.11/7,381.76
  6. Step 6: Final answer
    x = 5,526.88

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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.