Home / 3,937.92-5,434.19-2,169.51

Finding the Fourth Proportional to 3,937.92, 5,434.19 and 2,169.51

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Solution

The fourth proportional to 3,937.92, 5,434.19 and 2,169.51 is: 2,993.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,937.92 : 5,434.19 = 2,169.51 : x
  2. Step 2: Convert to fraction form
    3,937.92/5,434.19 = 2,169.51/x
  3. Step 3: Cross multiply
    3,937.92x = 5,434.19 × 2,169.51
  4. Step 4: Simplify right side
    3,937.92x = 11,789,518.70
  5. Step 5: Solve for x
    x = 11,789,518.70/3,937.92
  6. Step 6: Final answer
    x = 2,993.84

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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.