Home / 2,279.64-3,144.26-1,395.92

Finding the Fourth Proportional to 2,279.64, 3,144.26 and 1,395.92

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Solution

The fourth proportional to 2,279.64, 3,144.26 and 1,395.92 is: 1,925.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,279.64 : 3,144.26 = 1,395.92 : x
  2. Step 2: Convert to fraction form
    2,279.64/3,144.26 = 1,395.92/x
  3. Step 3: Cross multiply
    2,279.64x = 3,144.26 × 1,395.92
  4. Step 4: Simplify right side
    2,279.64x = 4,389,135.42
  5. Step 5: Solve for x
    x = 4,389,135.42/2,279.64
  6. Step 6: Final answer
    x = 1,925.36

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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.