Home / 3,147.60-4,334.44-2,815.92

Finding the Fourth Proportional to 3,147.60, 4,334.44 and 2,815.92

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Solution

The fourth proportional to 3,147.60, 4,334.44 and 2,815.92 is: 3,877.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,147.60 : 4,334.44 = 2,815.92 : x
  2. Step 2: Convert to fraction form
    3,147.60/4,334.44 = 2,815.92/x
  3. Step 3: Cross multiply
    3,147.60x = 4,334.44 × 2,815.92
  4. Step 4: Simplify right side
    3,147.60x = 12,205,436.28
  5. Step 5: Solve for x
    x = 12,205,436.28/3,147.60
  6. Step 6: Final answer
    x = 3,877.70

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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.