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Finding the Fourth Proportional to 2,695.19, 4,042.79 and 747.41

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Solution

The fourth proportional to 2,695.19, 4,042.79 and 747.41 is: 1,121.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,695.19 : 4,042.79 = 747.41 : x
  2. Step 2: Convert to fraction form
    2,695.19/4,042.79 = 747.41/x
  3. Step 3: Cross multiply
    2,695.19x = 4,042.79 × 747.41
  4. Step 4: Simplify right side
    2,695.19x = 3,021,621.67
  5. Step 5: Solve for x
    x = 3,021,621.67/2,695.19
  6. Step 6: Final answer
    x = 1,121.12

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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.