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Finding the Fourth Proportional to 5,581.80, 8,372.70 and 5,581.80

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Solution

The fourth proportional to 5,581.80, 8,372.70 and 5,581.80 is: 8,372.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,581.80 : 8,372.70 = 5,581.80 : x
  2. Step 2: Convert to fraction form
    5,581.80/8,372.70 = 5,581.80/x
  3. Step 3: Cross multiply
    5,581.80x = 8,372.70 × 5,581.80
  4. Step 4: Simplify right side
    5,581.80x = 46,734,736.86
  5. Step 5: Solve for x
    x = 46,734,736.86/5,581.80
  6. Step 6: Final answer
    x = 8,372.70

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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.