Home / 5,760.40-8,640.96-2,251.12

Finding the Fourth Proportional to 5,760.40, 8,640.96 and 2,251.12

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Solution

The fourth proportional to 5,760.40, 8,640.96 and 2,251.12 is: 3,376.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,760.40 : 8,640.96 = 2,251.12 : x
  2. Step 2: Convert to fraction form
    5,760.40/8,640.96 = 2,251.12/x
  3. Step 3: Cross multiply
    5,760.40x = 8,640.96 × 2,251.12
  4. Step 4: Simplify right side
    5,760.40x = 19,451,837.88
  5. Step 5: Solve for x
    x = 19,451,837.88/5,760.40
  6. Step 6: Final answer
    x = 3,376.82

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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.