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Finding the Fourth Proportional to 1,951.40, 2,693.18 and 1,279.77

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Solution

The fourth proportional to 1,951.40, 2,693.18 and 1,279.77 is: 1,766.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,951.40 : 2,693.18 = 1,279.77 : x
  2. Step 2: Convert to fraction form
    1,951.40/2,693.18 = 1,279.77/x
  3. Step 3: Cross multiply
    1,951.40x = 2,693.18 × 1,279.77
  4. Step 4: Simplify right side
    1,951.40x = 3,446,649.37
  5. Step 5: Solve for x
    x = 3,446,649.37/1,951.40
  6. Step 6: Final answer
    x = 1,766.24

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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.