Home / 1,439.06-1,988.97-1,268.42

Finding the Fourth Proportional to 1,439.06, 1,988.97 and 1,268.42

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Solution

The fourth proportional to 1,439.06, 1,988.97 and 1,268.42 is: 1,753.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,439.06 : 1,988.97 = 1,268.42 : x
  2. Step 2: Convert to fraction form
    1,439.06/1,988.97 = 1,268.42/x
  3. Step 3: Cross multiply
    1,439.06x = 1,988.97 × 1,268.42
  4. Step 4: Simplify right side
    1,439.06x = 2,522,849.33
  5. Step 5: Solve for x
    x = 2,522,849.33/1,439.06
  6. Step 6: Final answer
    x = 1,753.12

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.