Home / 2,491.28-3,437.84-1,372.19

Finding the Fourth Proportional to 2,491.28, 3,437.84 and 1,372.19

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Solution

The fourth proportional to 2,491.28, 3,437.84 and 1,372.19 is: 1,893.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,491.28 : 3,437.84 = 1,372.19 : x
  2. Step 2: Convert to fraction form
    2,491.28/3,437.84 = 1,372.19/x
  3. Step 3: Cross multiply
    2,491.28x = 3,437.84 × 1,372.19
  4. Step 4: Simplify right side
    2,491.28x = 4,717,389.75
  5. Step 5: Solve for x
    x = 4,717,389.75/2,491.28
  6. Step 6: Final answer
    x = 1,893.56

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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.