Home / 1,228.11-1,839.74-576.87

Finding the Fourth Proportional to 1,228.11, 1,839.74 and 576.87

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Solution

The fourth proportional to 1,228.11, 1,839.74 and 576.87 is: 864.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,228.11 : 1,839.74 = 576.87 : x
  2. Step 2: Convert to fraction form
    1,228.11/1,839.74 = 576.87/x
  3. Step 3: Cross multiply
    1,228.11x = 1,839.74 × 576.87
  4. Step 4: Simplify right side
    1,228.11x = 1,061,287.93
  5. Step 5: Solve for x
    x = 1,061,287.93/1,228.11
  6. Step 6: Final answer
    x = 864.16

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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.