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Finding the Fourth Proportional to 1,863.74, 2,571.62 and 1,155.76

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Solution

The fourth proportional to 1,863.74, 2,571.62 and 1,155.76 is: 1,594.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,863.74 : 2,571.62 = 1,155.76 : x
  2. Step 2: Convert to fraction form
    1,863.74/2,571.62 = 1,155.76/x
  3. Step 3: Cross multiply
    1,863.74x = 2,571.62 × 1,155.76
  4. Step 4: Simplify right side
    1,863.74x = 2,972,165.56
  5. Step 5: Solve for x
    x = 2,972,165.56/1,863.74
  6. Step 6: Final answer
    x = 1,594.73

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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.