Home / 3,938.68-5,434.99-2,170.23

Finding the Fourth Proportional to 3,938.68, 5,434.99 and 2,170.23

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Solution

The fourth proportional to 3,938.68, 5,434.99 and 2,170.23 is: 2,994.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,938.68 : 5,434.99 = 2,170.23 : x
  2. Step 2: Convert to fraction form
    3,938.68/5,434.99 = 2,170.23/x
  3. Step 3: Cross multiply
    3,938.68x = 5,434.99 × 2,170.23
  4. Step 4: Simplify right side
    3,938.68x = 11,795,178.35
  5. Step 5: Solve for x
    x = 11,795,178.35/3,938.68
  6. Step 6: Final answer
    x = 2,994.70

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.