Home / 3,942.96-5,441.28-2,174.57

Finding the Fourth Proportional to 3,942.96, 5,441.28 and 2,174.57

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Solution

The fourth proportional to 3,942.96, 5,441.28 and 2,174.57 is: 3,000.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,942.96 : 5,441.28 = 2,174.57 : x
  2. Step 2: Convert to fraction form
    3,942.96/5,441.28 = 2,174.57/x
  3. Step 3: Cross multiply
    3,942.96x = 5,441.28 × 2,174.57
  4. Step 4: Simplify right side
    3,942.96x = 11,832,417.04
  5. Step 5: Solve for x
    x = 11,832,417.04/3,942.96
  6. Step 6: Final answer
    x = 3,000.90

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1.5x scale

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.