Home / 2,635.20-3,947.40-1,983.96

Finding the Fourth Proportional to 2,635.20, 3,947.40 and 1,983.96

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Solution

The fourth proportional to 2,635.20, 3,947.40 and 1,983.96 is: 2,971.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,635.20 : 3,947.40 = 1,983.96 : x
  2. Step 2: Convert to fraction form
    2,635.20/3,947.40 = 1,983.96/x
  3. Step 3: Cross multiply
    2,635.20x = 3,947.40 × 1,983.96
  4. Step 4: Simplify right side
    2,635.20x = 7,831,483.70
  5. Step 5: Solve for x
    x = 7,831,483.70/2,635.20
  6. Step 6: Final answer
    x = 2,971.87

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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.