Home / 1,327.89-1,988.19-677.26

Finding the Fourth Proportional to 1,327.89, 1,988.19 and 677.26

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Solution

The fourth proportional to 1,327.89, 1,988.19 and 677.26 is: 1,014.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,327.89 : 1,988.19 = 677.26 : x
  2. Step 2: Convert to fraction form
    1,327.89/1,988.19 = 677.26/x
  3. Step 3: Cross multiply
    1,327.89x = 1,988.19 × 677.26
  4. Step 4: Simplify right side
    1,327.89x = 1,346,508.23
  5. Step 5: Solve for x
    x = 1,346,508.23/1,327.89
  6. Step 6: Final answer
    x = 1,014.02

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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.