Home / 3,618.79-5,428.88-2,387.25

Finding the Fourth Proportional to 3,618.79, 5,428.88 and 2,387.25

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Solution

The fourth proportional to 3,618.79, 5,428.88 and 2,387.25 is: 3,581.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,618.79 : 5,428.88 = 2,387.25 : x
  2. Step 2: Convert to fraction form
    3,618.79/5,428.88 = 2,387.25/x
  3. Step 3: Cross multiply
    3,618.79x = 5,428.88 × 2,387.25
  4. Step 4: Simplify right side
    3,618.79x = 12,960,093.78
  5. Step 5: Solve for x
    x = 12,960,093.78/3,618.79
  6. Step 6: Final answer
    x = 3,581.33

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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.