Home / 2,491.56-3,438.36-1,372.47

Finding the Fourth Proportional to 2,491.56, 3,438.36 and 1,372.47

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Solution

The fourth proportional to 2,491.56, 3,438.36 and 1,372.47 is: 1,894.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,491.56 : 3,438.36 = 1,372.47 : x
  2. Step 2: Convert to fraction form
    2,491.56/3,438.36 = 1,372.47/x
  3. Step 3: Cross multiply
    2,491.56x = 3,438.36 × 1,372.47
  4. Step 4: Simplify right side
    2,491.56x = 4,719,045.95
  5. Step 5: Solve for x
    x = 4,719,045.95/2,491.56
  6. Step 6: Final answer
    x = 1,894.01

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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.