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Finding the Fourth Proportional to 8,699.52, 13,049.76 and 5,640.96

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Solution

The fourth proportional to 8,699.52, 13,049.76 and 5,640.96 is: 8,461.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,699.52 : 13,049.76 = 5,640.96 : x
  2. Step 2: Convert to fraction form
    8,699.52/13,049.76 = 5,640.96/x
  3. Step 3: Cross multiply
    8,699.52x = 13,049.76 × 5,640.96
  4. Step 4: Simplify right side
    8,699.52x = 73,613,174.17
  5. Step 5: Solve for x
    x = 73,613,174.17/8,699.52
  6. Step 6: Final answer
    x = 8,461.75

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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.