Home / 3,942.02-5,439.91-2,149.52

Finding the Fourth Proportional to 3,942.02, 5,439.91 and 2,149.52

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Solution

The fourth proportional to 3,942.02, 5,439.91 and 2,149.52 is: 2,966.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,942.02 : 5,439.91 = 2,149.52 : x
  2. Step 2: Convert to fraction form
    3,942.02/5,439.91 = 2,149.52/x
  3. Step 3: Cross multiply
    3,942.02x = 5,439.91 × 2,149.52
  4. Step 4: Simplify right side
    3,942.02x = 11,693,195.34
  5. Step 5: Solve for x
    x = 11,693,195.34/3,942.02
  6. Step 6: Final answer
    x = 2,966.30

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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.