Home / 1,679.93-2,517.17-1,331.39

Finding the Fourth Proportional to 1,679.93, 2,517.17 and 1,331.39

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Solution

The fourth proportional to 1,679.93, 2,517.17 and 1,331.39 is: 1,994.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,679.93 : 2,517.17 = 1,331.39 : x
  2. Step 2: Convert to fraction form
    1,679.93/2,517.17 = 1,331.39/x
  3. Step 3: Cross multiply
    1,679.93x = 2,517.17 × 1,331.39
  4. Step 4: Simplify right side
    1,679.93x = 3,351,315.72
  5. Step 5: Solve for x
    x = 3,351,315.72/1,679.93
  6. Step 6: Final answer
    x = 1,994.91

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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.