Home / 3,487.40-5,231.10-1,295.90

Finding the Fourth Proportional to 3,487.40, 5,231.10 and 1,295.90

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Solution

The fourth proportional to 3,487.40, 5,231.10 and 1,295.90 is: 1,943.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,487.40 : 5,231.10 = 1,295.90 : x
  2. Step 2: Convert to fraction form
    3,487.40/5,231.10 = 1,295.90/x
  3. Step 3: Cross multiply
    3,487.40x = 5,231.10 × 1,295.90
  4. Step 4: Simplify right side
    3,487.40x = 6,778,982.49
  5. Step 5: Solve for x
    x = 6,778,982.49/3,487.40
  6. Step 6: Final answer
    x = 1,943.85

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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.