Home / 8,381.16-12,575.58-3,189.48

Finding the Fourth Proportional to 8,381.16, 12,575.58 and 3,189.48

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Solution

The fourth proportional to 8,381.16, 12,575.58 and 3,189.48 is: 4,785.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,381.16 : 12,575.58 = 3,189.48 : x
  2. Step 2: Convert to fraction form
    8,381.16/12,575.58 = 3,189.48/x
  3. Step 3: Cross multiply
    8,381.16x = 12,575.58 × 3,189.48
  4. Step 4: Simplify right side
    8,381.16x = 40,109,560.90
  5. Step 5: Solve for x
    x = 40,109,560.90/8,381.16
  6. Step 6: Final answer
    x = 4,785.68

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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.