Home / 3,478.38-5,217.57-2,107.50

Finding the Fourth Proportional to 3,478.38, 5,217.57 and 2,107.50

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Solution

The fourth proportional to 3,478.38, 5,217.57 and 2,107.50 is: 3,161.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,478.38 : 5,217.57 = 2,107.50 : x
  2. Step 2: Convert to fraction form
    3,478.38/5,217.57 = 2,107.50/x
  3. Step 3: Cross multiply
    3,478.38x = 5,217.57 × 2,107.50
  4. Step 4: Simplify right side
    3,478.38x = 10,996,028.78
  5. Step 5: Solve for x
    x = 10,996,028.78/3,478.38
  6. Step 6: Final answer
    x = 3,161.25

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.