Home / 8,387.75-12,587.43-3,127.55

Finding the Fourth Proportional to 8,387.75, 12,587.43 and 3,127.55

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Solution

The fourth proportional to 8,387.75, 12,587.43 and 3,127.55 is: 4,693.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,387.75 : 12,587.43 = 3,127.55 : x
  2. Step 2: Convert to fraction form
    8,387.75/12,587.43 = 3,127.55/x
  3. Step 3: Cross multiply
    8,387.75x = 12,587.43 × 3,127.55
  4. Step 4: Simplify right side
    8,387.75x = 39,367,765.49
  5. Step 5: Solve for x
    x = 39,367,765.49/8,387.75
  6. Step 6: Final answer
    x = 4,693.48

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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.