Home / 7,117-9,821.22-4,132.66

Finding the Fourth Proportional to 7,117, 9,821.22 and 4,132.66

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Solution

The fourth proportional to 7,117, 9,821.22 and 4,132.66 is: 5,702.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,117 : 9,821.22 = 4,132.66 : x
  2. Step 2: Convert to fraction form
    7,117/9,821.22 = 4,132.66/x
  3. Step 3: Cross multiply
    7,117x = 9,821.22 × 4,132.66
  4. Step 4: Simplify right side
    7,117x = 40,587,763.05
  5. Step 5: Solve for x
    x = 40,587,763.05/7,117
  6. Step 6: Final answer
    x = 5,702.93

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.