Home / 3,902.31-5,386.32-2,224.62

Finding the Fourth Proportional to 3,902.31, 5,386.32 and 2,224.62

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Solution

The fourth proportional to 3,902.31, 5,386.32 and 2,224.62 is: 3,070.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,902.31 : 5,386.32 = 2,224.62 : x
  2. Step 2: Convert to fraction form
    3,902.31/5,386.32 = 2,224.62/x
  3. Step 3: Cross multiply
    3,902.31x = 5,386.32 × 2,224.62
  4. Step 4: Simplify right side
    3,902.31x = 11,982,515.20
  5. Step 5: Solve for x
    x = 11,982,515.20/3,902.31
  6. Step 6: Final answer
    x = 3,070.62

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.