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Finding the Fourth Proportional to 2,927.97, 4,393.79 and 1,079.95

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Solution

The fourth proportional to 2,927.97, 4,393.79 and 1,079.95 is: 1,620.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,927.97 : 4,393.79 = 1,079.95 : x
  2. Step 2: Convert to fraction form
    2,927.97/4,393.79 = 1,079.95/x
  3. Step 3: Cross multiply
    2,927.97x = 4,393.79 × 1,079.95
  4. Step 4: Simplify right side
    2,927.97x = 4,745,073.51
  5. Step 5: Solve for x
    x = 4,745,073.51/2,927.97
  6. Step 6: Final answer
    x = 1,620.60

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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.