Home / 5,432.12-8,142.30-2,660.66

Finding the Fourth Proportional to 5,432.12, 8,142.30 and 2,660.66

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Solution

The fourth proportional to 5,432.12, 8,142.30 and 2,660.66 is: 3,988.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,432.12 : 8,142.30 = 2,660.66 : x
  2. Step 2: Convert to fraction form
    5,432.12/8,142.30 = 2,660.66/x
  3. Step 3: Cross multiply
    5,432.12x = 8,142.30 × 2,660.66
  4. Step 4: Simplify right side
    5,432.12x = 21,663,891.92
  5. Step 5: Solve for x
    x = 21,663,891.92/5,432.12
  6. Step 6: Final answer
    x = 3,988.11

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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.