Home / 2,121.29-3,181.31-888.66

Finding the Fourth Proportional to 2,121.29, 3,181.31 and 888.66

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Solution

The fourth proportional to 2,121.29, 3,181.31 and 888.66 is: 1,332.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,121.29 : 3,181.31 = 888.66 : x
  2. Step 2: Convert to fraction form
    2,121.29/3,181.31 = 888.66/x
  3. Step 3: Cross multiply
    2,121.29x = 3,181.31 × 888.66
  4. Step 4: Simplify right side
    2,121.29x = 2,827,098.50
  5. Step 5: Solve for x
    x = 2,827,098.50/2,121.29
  6. Step 6: Final answer
    x = 1,332.73

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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.