Home / 1,701.20-2,551.32-728.36

Finding the Fourth Proportional to 1,701.20, 2,551.32 and 728.36

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Solution

The fourth proportional to 1,701.20, 2,551.32 and 728.36 is: 1,092.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,701.20 : 2,551.32 = 728.36 : x
  2. Step 2: Convert to fraction form
    1,701.20/2,551.32 = 728.36/x
  3. Step 3: Cross multiply
    1,701.20x = 2,551.32 × 728.36
  4. Step 4: Simplify right side
    1,701.20x = 1,858,279.44
  5. Step 5: Solve for x
    x = 1,858,279.44/1,701.20
  6. Step 6: Final answer
    x = 1,092.33

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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.