Home / 3,942.13-5,440.16-2,173.70

Finding the Fourth Proportional to 3,942.13, 5,440.16 and 2,173.70

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Solution

The fourth proportional to 3,942.13, 5,440.16 and 2,173.70 is: 2,999.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,942.13 : 5,440.16 = 2,173.70 : x
  2. Step 2: Convert to fraction form
    3,942.13/5,440.16 = 2,173.70/x
  3. Step 3: Cross multiply
    3,942.13x = 5,440.16 × 2,173.70
  4. Step 4: Simplify right side
    3,942.13x = 11,825,264.92
  5. Step 5: Solve for x
    x = 11,825,264.92/3,942.13
  6. Step 6: Final answer
    x = 2,999.72

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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.