Home / 8,279.28-11,397.51-7,176.06

Finding the Fourth Proportional to 8,279.28, 11,397.51 and 7,176.06

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Solution

The fourth proportional to 8,279.28, 11,397.51 and 7,176.06 is: 9,878.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,279.28 : 11,397.51 = 7,176.06 : x
  2. Step 2: Convert to fraction form
    8,279.28/11,397.51 = 7,176.06/x
  3. Step 3: Cross multiply
    8,279.28x = 11,397.51 × 7,176.06
  4. Step 4: Simplify right side
    8,279.28x = 81,789,215.61
  5. Step 5: Solve for x
    x = 81,789,215.61/8,279.28
  6. Step 6: Final answer
    x = 9,878.78

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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.