Home / 2,167.69-3,251.52-1,388.08

Finding the Fourth Proportional to 2,167.69, 3,251.52 and 1,388.08

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Solution

The fourth proportional to 2,167.69, 3,251.52 and 1,388.08 is: 2,082.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,167.69 : 3,251.52 = 1,388.08 : x
  2. Step 2: Convert to fraction form
    2,167.69/3,251.52 = 1,388.08/x
  3. Step 3: Cross multiply
    2,167.69x = 3,251.52 × 1,388.08
  4. Step 4: Simplify right side
    2,167.69x = 4,513,369.88
  5. Step 5: Solve for x
    x = 4,513,369.88/2,167.69
  6. Step 6: Final answer
    x = 2,082.11

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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.