Home / 2,186.28-3,278.35-724.94

Finding the Fourth Proportional to 2,186.28, 3,278.35 and 724.94

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Solution

The fourth proportional to 2,186.28, 3,278.35 and 724.94 is: 1,087.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,186.28 : 3,278.35 = 724.94 : x
  2. Step 2: Convert to fraction form
    2,186.28/3,278.35 = 724.94/x
  3. Step 3: Cross multiply
    2,186.28x = 3,278.35 × 724.94
  4. Step 4: Simplify right side
    2,186.28x = 2,376,607.05
  5. Step 5: Solve for x
    x = 2,376,607.05/2,186.28
  6. Step 6: Final answer
    x = 1,087.06

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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.