Home / 3,931.96-5,899.36-1,982.70

Finding the Fourth Proportional to 3,931.96, 5,899.36 and 1,982.70

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Solution

The fourth proportional to 3,931.96, 5,899.36 and 1,982.70 is: 2,974.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,931.96 : 5,899.36 = 1,982.70 : x
  2. Step 2: Convert to fraction form
    3,931.96/5,899.36 = 1,982.70/x
  3. Step 3: Cross multiply
    3,931.96x = 5,899.36 × 1,982.70
  4. Step 4: Simplify right side
    3,931.96x = 11,696,621.66
  5. Step 5: Solve for x
    x = 11,696,621.66/3,931.96
  6. Step 6: Final answer
    x = 2,974.76

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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.