Home / 3,938.68-5,435.17-2,170.25

Finding the Fourth Proportional to 3,938.68, 5,435.17 and 2,170.25

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Solution

The fourth proportional to 3,938.68, 5,435.17 and 2,170.25 is: 2,994.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,938.68 : 5,435.17 = 2,170.25 : x
  2. Step 2: Convert to fraction form
    3,938.68/5,435.17 = 2,170.25/x
  3. Step 3: Cross multiply
    3,938.68x = 5,435.17 × 2,170.25
  4. Step 4: Simplify right side
    3,938.68x = 11,795,677.69
  5. Step 5: Solve for x
    x = 11,795,677.69/3,938.68
  6. Step 6: Final answer
    x = 2,994.83

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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.