Home / 2,491.49-3,438.45-1,372.64

Finding the Fourth Proportional to 2,491.49, 3,438.45 and 1,372.64

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Solution

The fourth proportional to 2,491.49, 3,438.45 and 1,372.64 is: 1,894.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,491.49 : 3,438.45 = 1,372.64 : x
  2. Step 2: Convert to fraction form
    2,491.49/3,438.45 = 1,372.64/x
  3. Step 3: Cross multiply
    2,491.49x = 3,438.45 × 1,372.64
  4. Step 4: Simplify right side
    2,491.49x = 4,719,754.01
  5. Step 5: Solve for x
    x = 4,719,754.01/2,491.49
  6. Step 6: Final answer
    x = 1,894.35

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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.