Home / 3,712.08-5,124.42-2,139.90

Finding the Fourth Proportional to 3,712.08, 5,124.42 and 2,139.90

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Solution

The fourth proportional to 3,712.08, 5,124.42 and 2,139.90 is: 2,954.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,712.08 : 5,124.42 = 2,139.90 : x
  2. Step 2: Convert to fraction form
    3,712.08/5,124.42 = 2,139.90/x
  3. Step 3: Cross multiply
    3,712.08x = 5,124.42 × 2,139.90
  4. Step 4: Simplify right side
    3,712.08x = 10,965,746.36
  5. Step 5: Solve for x
    x = 10,965,746.36/3,712.08
  6. Step 6: Final answer
    x = 2,954.07

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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.