Home / 8,439.90-12,660.57-2,200.74

Finding the Fourth Proportional to 8,439.90, 12,660.57 and 2,200.74

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Solution

The fourth proportional to 8,439.90, 12,660.57 and 2,200.74 is: 3,301.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,439.90 : 12,660.57 = 2,200.74 : x
  2. Step 2: Convert to fraction form
    8,439.90/12,660.57 = 2,200.74/x
  3. Step 3: Cross multiply
    8,439.90x = 12,660.57 × 2,200.74
  4. Step 4: Simplify right side
    8,439.90x = 27,862,622.82
  5. Step 5: Solve for x
    x = 27,862,622.82/8,439.90
  6. Step 6: Final answer
    x = 3,301.30

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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.