Home / 8,979.28-13,454.88-5,685.44

Finding the Fourth Proportional to 8,979.28, 13,454.88 and 5,685.44

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Solution

The fourth proportional to 8,979.28, 13,454.88 and 5,685.44 is: 8,519.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,979.28 : 13,454.88 = 5,685.44 : x
  2. Step 2: Convert to fraction form
    8,979.28/13,454.88 = 5,685.44/x
  3. Step 3: Cross multiply
    8,979.28x = 13,454.88 × 5,685.44
  4. Step 4: Simplify right side
    8,979.28x = 76,496,912.95
  5. Step 5: Solve for x
    x = 76,496,912.95/8,979.28
  6. Step 6: Final answer
    x = 8,519.27

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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.