Home / 2,759.06-4,139.67-2,178.02

Finding the Fourth Proportional to 2,759.06, 4,139.67 and 2,178.02

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Solution

The fourth proportional to 2,759.06, 4,139.67 and 2,178.02 is: 3,267.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,759.06 : 4,139.67 = 2,178.02 : x
  2. Step 2: Convert to fraction form
    2,759.06/4,139.67 = 2,178.02/x
  3. Step 3: Cross multiply
    2,759.06x = 4,139.67 × 2,178.02
  4. Step 4: Simplify right side
    2,759.06x = 9,016,284.05
  5. Step 5: Solve for x
    x = 9,016,284.05/2,759.06
  6. Step 6: Final answer
    x = 3,267.88

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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.