Home / 9,291.38-12,822.10-5,099.90

Finding the Fourth Proportional to 9,291.38, 12,822.10 and 5,099.90

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Solution

The fourth proportional to 9,291.38, 12,822.10 and 5,099.90 is: 7,037.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,291.38 : 12,822.10 = 5,099.90 : x
  2. Step 2: Convert to fraction form
    9,291.38/12,822.10 = 5,099.90/x
  3. Step 3: Cross multiply
    9,291.38x = 12,822.10 × 5,099.90
  4. Step 4: Simplify right side
    9,291.38x = 65,391,350.93
  5. Step 5: Solve for x
    x = 65,391,350.93/9,291.38
  6. Step 6: Final answer
    x = 7,037.86

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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.