Home / 3,902.92-5,386.74-2,331.12

Finding the Fourth Proportional to 3,902.92, 5,386.74 and 2,331.12

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Solution

The fourth proportional to 3,902.92, 5,386.74 and 2,331.12 is: 3,217.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,902.92 : 5,386.74 = 2,331.12 : x
  2. Step 2: Convert to fraction form
    3,902.92/5,386.74 = 2,331.12/x
  3. Step 3: Cross multiply
    3,902.92x = 5,386.74 × 2,331.12
  4. Step 4: Simplify right side
    3,902.92x = 12,557,137.35
  5. Step 5: Solve for x
    x = 12,557,137.35/3,902.92
  6. Step 6: Final answer
    x = 3,217.37

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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.