Home / 8,340.28-12,513.30-3,147.64

Finding the Fourth Proportional to 8,340.28, 12,513.30 and 3,147.64

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Solution

The fourth proportional to 8,340.28, 12,513.30 and 3,147.64 is: 4,722.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,340.28 : 12,513.30 = 3,147.64 : x
  2. Step 2: Convert to fraction form
    8,340.28/12,513.30 = 3,147.64/x
  3. Step 3: Cross multiply
    8,340.28x = 12,513.30 × 3,147.64
  4. Step 4: Simplify right side
    8,340.28x = 39,387,363.61
  5. Step 5: Solve for x
    x = 39,387,363.61/8,340.28
  6. Step 6: Final answer
    x = 4,722.55

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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.