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Finding the Fourth Proportional to 5,581.32, 8,381.70 and 5,125.56

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Solution

The fourth proportional to 5,581.32, 8,381.70 and 5,125.56 is: 7,697.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,581.32 : 8,381.70 = 5,125.56 : x
  2. Step 2: Convert to fraction form
    5,581.32/8,381.70 = 5,125.56/x
  3. Step 3: Cross multiply
    5,581.32x = 8,381.70 × 5,125.56
  4. Step 4: Simplify right side
    5,581.32x = 42,960,906.25
  5. Step 5: Solve for x
    x = 42,960,906.25/5,581.32
  6. Step 6: Final answer
    x = 7,697.27

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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.