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Finding the Fourth Proportional to 1,955.92, 2,934.24 and 621.82

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Solution

The fourth proportional to 1,955.92, 2,934.24 and 621.82 is: 932.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,955.92 : 2,934.24 = 621.82 : x
  2. Step 2: Convert to fraction form
    1,955.92/2,934.24 = 621.82/x
  3. Step 3: Cross multiply
    1,955.92x = 2,934.24 × 621.82
  4. Step 4: Simplify right side
    1,955.92x = 1,824,569.12
  5. Step 5: Solve for x
    x = 1,824,569.12/1,955.92
  6. Step 6: Final answer
    x = 932.84

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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.