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Finding the Fourth Proportional to 2,321.97, 3,478.91 and 1,934.46

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Solution

The fourth proportional to 2,321.97, 3,478.91 and 1,934.46 is: 2,898.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,321.97 : 3,478.91 = 1,934.46 : x
  2. Step 2: Convert to fraction form
    2,321.97/3,478.91 = 1,934.46/x
  3. Step 3: Cross multiply
    2,321.97x = 3,478.91 × 1,934.46
  4. Step 4: Simplify right side
    2,321.97x = 6,729,802.57
  5. Step 5: Solve for x
    x = 6,729,802.57/2,321.97
  6. Step 6: Final answer
    x = 2,898.32

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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.