Home / 3,938.50-5,435.14-2,170.27

Finding the Fourth Proportional to 3,938.50, 5,435.14 and 2,170.27

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Solution

The fourth proportional to 3,938.50, 5,435.14 and 2,170.27 is: 2,994.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,938.50 : 5,435.14 = 2,170.27 : x
  2. Step 2: Convert to fraction form
    3,938.50/5,435.14 = 2,170.27/x
  3. Step 3: Cross multiply
    3,938.50x = 5,435.14 × 2,170.27
  4. Step 4: Simplify right side
    3,938.50x = 11,795,721.29
  5. Step 5: Solve for x
    x = 11,795,721.29/3,938.50
  6. Step 6: Final answer
    x = 2,994.98

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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.