Home / 9,108.59-12,569.45-5,129.64

Finding the Fourth Proportional to 9,108.59, 12,569.45 and 5,129.64

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Solution

The fourth proportional to 9,108.59, 12,569.45 and 5,129.64 is: 7,078.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,108.59 : 12,569.45 = 5,129.64 : x
  2. Step 2: Convert to fraction form
    9,108.59/12,569.45 = 5,129.64/x
  3. Step 3: Cross multiply
    9,108.59x = 12,569.45 × 5,129.64
  4. Step 4: Simplify right side
    9,108.59x = 64,476,727.85
  5. Step 5: Solve for x
    x = 64,476,727.85/9,108.59
  6. Step 6: Final answer
    x = 7,078.68

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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.