Home / 3,902.68-5,385.54-2,331.64

Finding the Fourth Proportional to 3,902.68, 5,385.54 and 2,331.64

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Solution

The fourth proportional to 3,902.68, 5,385.54 and 2,331.64 is: 3,217.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,902.68 : 5,385.54 = 2,331.64 : x
  2. Step 2: Convert to fraction form
    3,902.68/5,385.54 = 2,331.64/x
  3. Step 3: Cross multiply
    3,902.68x = 5,385.54 × 2,331.64
  4. Step 4: Simplify right side
    3,902.68x = 12,557,140.49
  5. Step 5: Solve for x
    x = 12,557,140.49/3,902.68
  6. Step 6: Final answer
    x = 3,217.57

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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.