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Finding the Fourth Proportional to 1,260.96, 1,881.40 and 1,251.24

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Solution

The fourth proportional to 1,260.96, 1,881.40 and 1,251.24 is: 1,866.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,260.96 : 1,881.40 = 1,251.24 : x
  2. Step 2: Convert to fraction form
    1,260.96/1,881.40 = 1,251.24/x
  3. Step 3: Cross multiply
    1,260.96x = 1,881.40 × 1,251.24
  4. Step 4: Simplify right side
    1,260.96x = 2,354,082.94
  5. Step 5: Solve for x
    x = 2,354,082.94/1,260.96
  6. Step 6: Final answer
    x = 1,866.90

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.