Home / 2,185.93-3,278.90-724.69

Finding the Fourth Proportional to 2,185.93, 3,278.90 and 724.69

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Solution

The fourth proportional to 2,185.93, 3,278.90 and 724.69 is: 1,087.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,185.93 : 3,278.90 = 724.69 : x
  2. Step 2: Convert to fraction form
    2,185.93/3,278.90 = 724.69/x
  3. Step 3: Cross multiply
    2,185.93x = 3,278.90 × 724.69
  4. Step 4: Simplify right side
    2,185.93x = 2,376,186.04
  5. Step 5: Solve for x
    x = 2,376,186.04/2,185.93
  6. Step 6: Final answer
    x = 1,087.04

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Similar ratio
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1.5x scale

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.