Home / 2,758.28-4,138.77-2,031.11

Finding the Fourth Proportional to 2,758.28, 4,138.77 and 2,031.11

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Solution

The fourth proportional to 2,758.28, 4,138.77 and 2,031.11 is: 3,047.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,758.28 : 4,138.77 = 2,031.11 : x
  2. Step 2: Convert to fraction form
    2,758.28/4,138.77 = 2,031.11/x
  3. Step 3: Cross multiply
    2,758.28x = 4,138.77 × 2,031.11
  4. Step 4: Simplify right side
    2,758.28x = 8,406,276.44
  5. Step 5: Solve for x
    x = 8,406,276.44/2,758.28
  6. Step 6: Final answer
    x = 3,047.65

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.