Home / 3,851.20-5,314.44-2,279.44

Finding the Fourth Proportional to 3,851.20, 5,314.44 and 2,279.44

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Solution

The fourth proportional to 3,851.20, 5,314.44 and 2,279.44 is: 3,145.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,851.20 : 5,314.44 = 2,279.44 : x
  2. Step 2: Convert to fraction form
    3,851.20/5,314.44 = 2,279.44/x
  3. Step 3: Cross multiply
    3,851.20x = 5,314.44 × 2,279.44
  4. Step 4: Simplify right side
    3,851.20x = 12,113,947.11
  5. Step 5: Solve for x
    x = 12,113,947.11/3,851.20
  6. Step 6: Final answer
    x = 3,145.50

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1.5x scale

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.