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Finding the Fourth Proportional to 6,609.52, 9,918.06 and 5,129.92

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Solution

The fourth proportional to 6,609.52, 9,918.06 and 5,129.92 is: 7,697.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,609.52 : 9,918.06 = 5,129.92 : x
  2. Step 2: Convert to fraction form
    6,609.52/9,918.06 = 5,129.92/x
  3. Step 3: Cross multiply
    6,609.52x = 9,918.06 × 5,129.92
  4. Step 4: Simplify right side
    6,609.52x = 50,878,854.36
  5. Step 5: Solve for x
    x = 50,878,854.36/6,609.52
  6. Step 6: Final answer
    x = 7,697.81

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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.