Home / 6,391.15-9,587.17-2,172.69

Finding the Fourth Proportional to 6,391.15, 9,587.17 and 2,172.69

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Solution

The fourth proportional to 6,391.15, 9,587.17 and 2,172.69 is: 3,259.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,391.15 : 9,587.17 = 2,172.69 : x
  2. Step 2: Convert to fraction form
    6,391.15/9,587.17 = 2,172.69/x
  3. Step 3: Cross multiply
    6,391.15x = 9,587.17 × 2,172.69
  4. Step 4: Simplify right side
    6,391.15x = 20,829,910.90
  5. Step 5: Solve for x
    x = 20,829,910.90/6,391.15
  6. Step 6: Final answer
    x = 3,259.18

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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.