Home / 3,587.68-5,382.24-1,278.88

Finding the Fourth Proportional to 3,587.68, 5,382.24 and 1,278.88

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Solution

The fourth proportional to 3,587.68, 5,382.24 and 1,278.88 is: 1,918.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,587.68 : 5,382.24 = 1,278.88 : x
  2. Step 2: Convert to fraction form
    3,587.68/5,382.24 = 1,278.88/x
  3. Step 3: Cross multiply
    3,587.68x = 5,382.24 × 1,278.88
  4. Step 4: Simplify right side
    3,587.68x = 6,883,239.09
  5. Step 5: Solve for x
    x = 6,883,239.09/3,587.68
  6. Step 6: Final answer
    x = 1,918.58

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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.