Home / 3,869.92-5,340.56-2,213.92

Finding the Fourth Proportional to 3,869.92, 5,340.56 and 2,213.92

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Solution

The fourth proportional to 3,869.92, 5,340.56 and 2,213.92 is: 3,055.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,869.92 : 5,340.56 = 2,213.92 : x
  2. Step 2: Convert to fraction form
    3,869.92/5,340.56 = 2,213.92/x
  3. Step 3: Cross multiply
    3,869.92x = 5,340.56 × 2,213.92
  4. Step 4: Simplify right side
    3,869.92x = 11,823,572.60
  5. Step 5: Solve for x
    x = 11,823,572.60/3,869.92
  6. Step 6: Final answer
    x = 3,055.25

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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.