Home / 3,321.28-4,988.40-2,705.44

Finding the Fourth Proportional to 3,321.28, 4,988.40 and 2,705.44

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Solution

The fourth proportional to 3,321.28, 4,988.40 and 2,705.44 is: 4,063.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,321.28 : 4,988.40 = 2,705.44 : x
  2. Step 2: Convert to fraction form
    3,321.28/4,988.40 = 2,705.44/x
  3. Step 3: Cross multiply
    3,321.28x = 4,988.40 × 2,705.44
  4. Step 4: Simplify right side
    3,321.28x = 13,495,816.90
  5. Step 5: Solve for x
    x = 13,495,816.90/3,321.28
  6. Step 6: Final answer
    x = 4,063.44

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.