Home / 4,265.70-6,398.55-3,172.20

Finding the Fourth Proportional to 4,265.70, 6,398.55 and 3,172.20

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Solution

The fourth proportional to 4,265.70, 6,398.55 and 3,172.20 is: 4,758.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,265.70 : 6,398.55 = 3,172.20 : x
  2. Step 2: Convert to fraction form
    4,265.70/6,398.55 = 3,172.20/x
  3. Step 3: Cross multiply
    4,265.70x = 6,398.55 × 3,172.20
  4. Step 4: Simplify right side
    4,265.70x = 20,297,480.31
  5. Step 5: Solve for x
    x = 20,297,480.31/4,265.70
  6. Step 6: Final answer
    x = 4,758.30

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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.