Home / 3,937.76-5,434.40-2,169.36

Finding the Fourth Proportional to 3,937.76, 5,434.40 and 2,169.36

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Solution

The fourth proportional to 3,937.76, 5,434.40 and 2,169.36 is: 2,993.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,937.76 : 5,434.40 = 2,169.36 : x
  2. Step 2: Convert to fraction form
    3,937.76/5,434.40 = 2,169.36/x
  3. Step 3: Cross multiply
    3,937.76x = 5,434.40 × 2,169.36
  4. Step 4: Simplify right side
    3,937.76x = 11,789,169.98
  5. Step 5: Solve for x
    x = 11,789,169.98/3,937.76
  6. Step 6: Final answer
    x = 2,993.88

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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.