Home / 2,391.23-3,587.05-659.85

Finding the Fourth Proportional to 2,391.23, 3,587.05 and 659.85

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Solution

The fourth proportional to 2,391.23, 3,587.05 and 659.85 is: 989.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,391.23 : 3,587.05 = 659.85 : x
  2. Step 2: Convert to fraction form
    2,391.23/3,587.05 = 659.85/x
  3. Step 3: Cross multiply
    2,391.23x = 3,587.05 × 659.85
  4. Step 4: Simplify right side
    2,391.23x = 2,366,922.26
  5. Step 5: Solve for x
    x = 2,366,922.26/2,391.23
  6. Step 6: Final answer
    x = 989.84

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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.