Home / 1,708.97-2,565.27-1,388.21

Finding the Fourth Proportional to 1,708.97, 2,565.27 and 1,388.21

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Solution

The fourth proportional to 1,708.97, 2,565.27 and 1,388.21 is: 2,083.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,708.97 : 2,565.27 = 1,388.21 : x
  2. Step 2: Convert to fraction form
    1,708.97/2,565.27 = 1,388.21/x
  3. Step 3: Cross multiply
    1,708.97x = 2,565.27 × 1,388.21
  4. Step 4: Simplify right side
    1,708.97x = 3,561,120.64
  5. Step 5: Solve for x
    x = 3,561,120.64/1,708.97
  6. Step 6: Final answer
    x = 2,083.79

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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.