Home / 2,179.13-3,268.90-718.30

Finding the Fourth Proportional to 2,179.13, 3,268.90 and 718.30

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Solution

The fourth proportional to 2,179.13, 3,268.90 and 718.30 is: 1,077.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,179.13 : 3,268.90 = 718.30 : x
  2. Step 2: Convert to fraction form
    2,179.13/3,268.90 = 718.30/x
  3. Step 3: Cross multiply
    2,179.13x = 3,268.90 × 718.30
  4. Step 4: Simplify right side
    2,179.13x = 2,348,034.53
  5. Step 5: Solve for x
    x = 2,348,034.53/2,179.13
  6. Step 6: Final answer
    x = 1,077.51

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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.