Home / 3,587.79-5,382.23-1,278.75

Finding the Fourth Proportional to 3,587.79, 5,382.23 and 1,278.75

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Solution

The fourth proportional to 3,587.79, 5,382.23 and 1,278.75 is: 1,918.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,587.79 : 5,382.23 = 1,278.75 : x
  2. Step 2: Convert to fraction form
    3,587.79/5,382.23 = 1,278.75/x
  3. Step 3: Cross multiply
    3,587.79x = 5,382.23 × 1,278.75
  4. Step 4: Simplify right side
    3,587.79x = 6,882,520.22
  5. Step 5: Solve for x
    x = 6,882,520.22/3,587.79
  6. Step 6: Final answer
    x = 1,918.32

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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.