Home / 3,938.39-5,435.19-2,170.16

Finding the Fourth Proportional to 3,938.39, 5,435.19 and 2,170.16

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Solution

The fourth proportional to 3,938.39, 5,435.19 and 2,170.16 is: 2,994.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,938.39 : 5,435.19 = 2,170.16 : x
  2. Step 2: Convert to fraction form
    3,938.39/5,435.19 = 2,170.16/x
  3. Step 3: Cross multiply
    3,938.39x = 5,435.19 × 2,170.16
  4. Step 4: Simplify right side
    3,938.39x = 11,795,204.75
  5. Step 5: Solve for x
    x = 11,795,204.75/3,938.39
  6. Step 6: Final answer
    x = 2,994.93

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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.