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Finding the Fourth Proportional to 1,758.77, 2,427.19 and 1,012.85

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Solution

The fourth proportional to 1,758.77, 2,427.19 and 1,012.85 is: 1,397.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,758.77 : 2,427.19 = 1,012.85 : x
  2. Step 2: Convert to fraction form
    1,758.77/2,427.19 = 1,012.85/x
  3. Step 3: Cross multiply
    1,758.77x = 2,427.19 × 1,012.85
  4. Step 4: Simplify right side
    1,758.77x = 2,458,375.86
  5. Step 5: Solve for x
    x = 2,458,375.86/1,758.77
  6. Step 6: Final answer
    x = 1,397.78

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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.