Home / 1,941.12-2,679.93-1,279.13

Finding the Fourth Proportional to 1,941.12, 2,679.93 and 1,279.13

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Solution

The fourth proportional to 1,941.12, 2,679.93 and 1,279.13 is: 1,765.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,941.12 : 2,679.93 = 1,279.13 : x
  2. Step 2: Convert to fraction form
    1,941.12/2,679.93 = 1,279.13/x
  3. Step 3: Cross multiply
    1,941.12x = 2,679.93 × 1,279.13
  4. Step 4: Simplify right side
    1,941.12x = 3,427,965.46
  5. Step 5: Solve for x
    x = 3,427,965.46/1,941.12
  6. Step 6: Final answer
    x = 1,765.97

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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.