Home / 8,390.38-12,585.57-3,197.47

Finding the Fourth Proportional to 8,390.38, 12,585.57 and 3,197.47

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Solution

The fourth proportional to 8,390.38, 12,585.57 and 3,197.47 is: 4,796.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,390.38 : 12,585.57 = 3,197.47 : x
  2. Step 2: Convert to fraction form
    8,390.38/12,585.57 = 3,197.47/x
  3. Step 3: Cross multiply
    8,390.38x = 12,585.57 × 3,197.47
  4. Step 4: Simplify right side
    8,390.38x = 40,241,919.58
  5. Step 5: Solve for x
    x = 40,241,919.58/8,390.38
  6. Step 6: Final answer
    x = 4,796.20

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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.