Home / 8,819.28-12,168.96-5,281.92

Finding the Fourth Proportional to 8,819.28, 12,168.96 and 5,281.92

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Solution

The fourth proportional to 8,819.28, 12,168.96 and 5,281.92 is: 7,288.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,819.28 : 12,168.96 = 5,281.92 : x
  2. Step 2: Convert to fraction form
    8,819.28/12,168.96 = 5,281.92/x
  3. Step 3: Cross multiply
    8,819.28x = 12,168.96 × 5,281.92
  4. Step 4: Simplify right side
    8,819.28x = 64,275,473.20
  5. Step 5: Solve for x
    x = 64,275,473.20/8,819.28
  6. Step 6: Final answer
    x = 7,288.06

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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.