Home / 3,942.39-5,440.47-2,174.16

Finding the Fourth Proportional to 3,942.39, 5,440.47 and 2,174.16

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Solution

The fourth proportional to 3,942.39, 5,440.47 and 2,174.16 is: 3,000.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,942.39 : 5,440.47 = 2,174.16 : x
  2. Step 2: Convert to fraction form
    3,942.39/5,440.47 = 2,174.16/x
  3. Step 3: Cross multiply
    3,942.39x = 5,440.47 × 2,174.16
  4. Step 4: Simplify right side
    3,942.39x = 11,828,452.26
  5. Step 5: Solve for x
    x = 11,828,452.26/3,942.39
  6. Step 6: Final answer
    x = 3,000.33

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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.