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Finding the Fourth Proportional to 1,951.70, 2,694.24 and 1,155.15

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Solution

The fourth proportional to 1,951.70, 2,694.24 and 1,155.15 is: 1,594.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,951.70 : 2,694.24 = 1,155.15 : x
  2. Step 2: Convert to fraction form
    1,951.70/2,694.24 = 1,155.15/x
  3. Step 3: Cross multiply
    1,951.70x = 2,694.24 × 1,155.15
  4. Step 4: Simplify right side
    1,951.70x = 3,112,251.34
  5. Step 5: Solve for x
    x = 3,112,251.34/1,951.70
  6. Step 6: Final answer
    x = 1,594.64

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.