Home / 2,079.11-3,118.68-1,427.87

Finding the Fourth Proportional to 2,079.11, 3,118.68 and 1,427.87

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Solution

The fourth proportional to 2,079.11, 3,118.68 and 1,427.87 is: 2,141.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,079.11 : 3,118.68 = 1,427.87 : x
  2. Step 2: Convert to fraction form
    2,079.11/3,118.68 = 1,427.87/x
  3. Step 3: Cross multiply
    2,079.11x = 3,118.68 × 1,427.87
  4. Step 4: Simplify right side
    2,079.11x = 4,453,069.61
  5. Step 5: Solve for x
    x = 4,453,069.61/2,079.11
  6. Step 6: Final answer
    x = 2,141.82

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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.