Home / 8,789.28-12,127.68-5,062.56

Finding the Fourth Proportional to 8,789.28, 12,127.68 and 5,062.56

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Solution

The fourth proportional to 8,789.28, 12,127.68 and 5,062.56 is: 6,985.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,789.28 : 12,127.68 = 5,062.56 : x
  2. Step 2: Convert to fraction form
    8,789.28/12,127.68 = 5,062.56/x
  3. Step 3: Cross multiply
    8,789.28x = 12,127.68 × 5,062.56
  4. Step 4: Simplify right side
    8,789.28x = 61,397,107.66
  5. Step 5: Solve for x
    x = 61,397,107.66/8,789.28
  6. Step 6: Final answer
    x = 6,985.45

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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.