Home / 8,505.20-11,724.12-5,520.56

Finding the Fourth Proportional to 8,505.20, 11,724.12 and 5,520.56

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Solution

The fourth proportional to 8,505.20, 11,724.12 and 5,520.56 is: 7,609.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,505.20 : 11,724.12 = 5,520.56 : x
  2. Step 2: Convert to fraction form
    8,505.20/11,724.12 = 5,520.56/x
  3. Step 3: Cross multiply
    8,505.20x = 11,724.12 × 5,520.56
  4. Step 4: Simplify right side
    8,505.20x = 64,723,707.91
  5. Step 5: Solve for x
    x = 64,723,707.91/8,505.20
  6. Step 6: Final answer
    x = 7,609.90

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.