Home / 2,679.92-4,017.60-1,218.56

Finding the Fourth Proportional to 2,679.92, 4,017.60 and 1,218.56

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Solution

The fourth proportional to 2,679.92, 4,017.60 and 1,218.56 is: 1,826.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,679.92 : 4,017.60 = 1,218.56 : x
  2. Step 2: Convert to fraction form
    2,679.92/4,017.60 = 1,218.56/x
  3. Step 3: Cross multiply
    2,679.92x = 4,017.60 × 1,218.56
  4. Step 4: Simplify right side
    2,679.92x = 4,895,686.66
  5. Step 5: Solve for x
    x = 4,895,686.66/2,679.92
  6. Step 6: Final answer
    x = 1,826.80

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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.