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Finding the Fourth Proportional to 7,581.68, 11,374.68 and 5,503.76

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Solution

The fourth proportional to 7,581.68, 11,374.68 and 5,503.76 is: 8,257.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,581.68 : 11,374.68 = 5,503.76 : x
  2. Step 2: Convert to fraction form
    7,581.68/11,374.68 = 5,503.76/x
  3. Step 3: Cross multiply
    7,581.68x = 11,374.68 × 5,503.76
  4. Step 4: Simplify right side
    7,581.68x = 62,603,508.80
  5. Step 5: Solve for x
    x = 62,603,508.80/7,581.68
  6. Step 6: Final answer
    x = 8,257.21

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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.