Home / 2,456.64-3,390.21-1,408.62

Finding the Fourth Proportional to 2,456.64, 3,390.21 and 1,408.62

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Solution

The fourth proportional to 2,456.64, 3,390.21 and 1,408.62 is: 1,943.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,456.64 : 3,390.21 = 1,408.62 : x
  2. Step 2: Convert to fraction form
    2,456.64/3,390.21 = 1,408.62/x
  3. Step 3: Cross multiply
    2,456.64x = 3,390.21 × 1,408.62
  4. Step 4: Simplify right side
    2,456.64x = 4,775,517.61
  5. Step 5: Solve for x
    x = 4,775,517.61/2,456.64
  6. Step 6: Final answer
    x = 1,943.92

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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.