Home / 2,321.12-3,480.89-934.11

Finding the Fourth Proportional to 2,321.12, 3,480.89 and 934.11

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Solution

The fourth proportional to 2,321.12, 3,480.89 and 934.11 is: 1,400.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,321.12 : 3,480.89 = 934.11 : x
  2. Step 2: Convert to fraction form
    2,321.12/3,480.89 = 934.11/x
  3. Step 3: Cross multiply
    2,321.12x = 3,480.89 × 934.11
  4. Step 4: Simplify right side
    2,321.12x = 3,251,534.16
  5. Step 5: Solve for x
    x = 3,251,534.16/2,321.12
  6. Step 6: Final answer
    x = 1,400.85

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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.