Home / 2,491.29-3,438.05-1,372.28

Finding the Fourth Proportional to 2,491.29, 3,438.05 and 1,372.28

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Solution

The fourth proportional to 2,491.29, 3,438.05 and 1,372.28 is: 1,893.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,491.29 : 3,438.05 = 1,372.28 : x
  2. Step 2: Convert to fraction form
    2,491.29/3,438.05 = 1,372.28/x
  3. Step 3: Cross multiply
    2,491.29x = 3,438.05 × 1,372.28
  4. Step 4: Simplify right side
    2,491.29x = 4,717,943.20
  5. Step 5: Solve for x
    x = 4,717,943.20/2,491.29
  6. Step 6: Final answer
    x = 1,893.78

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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.