Home / 3,869.17-5,339.21-2,190.92

Finding the Fourth Proportional to 3,869.17, 5,339.21 and 2,190.92

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Solution

The fourth proportional to 3,869.17, 5,339.21 and 2,190.92 is: 3,023.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,869.17 : 5,339.21 = 2,190.92 : x
  2. Step 2: Convert to fraction form
    3,869.17/5,339.21 = 2,190.92/x
  3. Step 3: Cross multiply
    3,869.17x = 5,339.21 × 2,190.92
  4. Step 4: Simplify right side
    3,869.17x = 11,697,781.97
  5. Step 5: Solve for x
    x = 11,697,781.97/3,869.17
  6. Step 6: Final answer
    x = 3,023.33

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Half scale
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Double scale
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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.