Home / 2,617.31-3,926.40-1,213.13

Finding the Fourth Proportional to 2,617.31, 3,926.40 and 1,213.13

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Solution

The fourth proportional to 2,617.31, 3,926.40 and 1,213.13 is: 1,819.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,617.31 : 3,926.40 = 1,213.13 : x
  2. Step 2: Convert to fraction form
    2,617.31/3,926.40 = 1,213.13/x
  3. Step 3: Cross multiply
    2,617.31x = 3,926.40 × 1,213.13
  4. Step 4: Simplify right side
    2,617.31x = 4,763,224.17
  5. Step 5: Solve for x
    x = 4,763,224.17/2,617.31
  6. Step 6: Final answer
    x = 1,819.90

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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.