Home / 3,906.72-5,387.40-3,160.08

Finding the Fourth Proportional to 3,906.72, 5,387.40 and 3,160.08

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Solution

The fourth proportional to 3,906.72, 5,387.40 and 3,160.08 is: 4,357.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,906.72 : 5,387.40 = 3,160.08 : x
  2. Step 2: Convert to fraction form
    3,906.72/5,387.40 = 3,160.08/x
  3. Step 3: Cross multiply
    3,906.72x = 5,387.40 × 3,160.08
  4. Step 4: Simplify right side
    3,906.72x = 17,024,614.99
  5. Step 5: Solve for x
    x = 17,024,614.99/3,906.72
  6. Step 6: Final answer
    x = 4,357.78

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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.