Home / 5,704.61-7,872.68-3,186.74

Finding the Fourth Proportional to 5,704.61, 7,872.68 and 3,186.74

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Solution

The fourth proportional to 5,704.61, 7,872.68 and 3,186.74 is: 4,397.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,704.61 : 7,872.68 = 3,186.74 : x
  2. Step 2: Convert to fraction form
    5,704.61/7,872.68 = 3,186.74/x
  3. Step 3: Cross multiply
    5,704.61x = 7,872.68 × 3,186.74
  4. Step 4: Simplify right side
    5,704.61x = 25,088,128.97
  5. Step 5: Solve for x
    x = 25,088,128.97/5,704.61
  6. Step 6: Final answer
    x = 4,397.87

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.