Home / 2,391.24-3,587.12-659.92

Finding the Fourth Proportional to 2,391.24, 3,587.12 and 659.92

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Solution

The fourth proportional to 2,391.24, 3,587.12 and 659.92 is: 989.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,391.24 : 3,587.12 = 659.92 : x
  2. Step 2: Convert to fraction form
    2,391.24/3,587.12 = 659.92/x
  3. Step 3: Cross multiply
    2,391.24x = 3,587.12 × 659.92
  4. Step 4: Simplify right side
    2,391.24x = 2,367,212.23
  5. Step 5: Solve for x
    x = 2,367,212.23/2,391.24
  6. Step 6: Final answer
    x = 989.95

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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.