Home / 8,207.28-12,311.28-2,660.16

Finding the Fourth Proportional to 8,207.28, 12,311.28 and 2,660.16

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Solution

The fourth proportional to 8,207.28, 12,311.28 and 2,660.16 is: 3,990.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,207.28 : 12,311.28 = 2,660.16 : x
  2. Step 2: Convert to fraction form
    8,207.28/12,311.28 = 2,660.16/x
  3. Step 3: Cross multiply
    8,207.28x = 12,311.28 × 2,660.16
  4. Step 4: Simplify right side
    8,207.28x = 32,749,974.60
  5. Step 5: Solve for x
    x = 32,749,974.60/8,207.28
  6. Step 6: Final answer
    x = 3,990.36

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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.