Home / 5,217.28-7,199.80-2,859.42

Finding the Fourth Proportional to 5,217.28, 7,199.80 and 2,859.42

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Solution

The fourth proportional to 5,217.28, 7,199.80 and 2,859.42 is: 3,945.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,217.28 : 7,199.80 = 2,859.42 : x
  2. Step 2: Convert to fraction form
    5,217.28/7,199.80 = 2,859.42/x
  3. Step 3: Cross multiply
    5,217.28x = 7,199.80 × 2,859.42
  4. Step 4: Simplify right side
    5,217.28x = 20,587,252.12
  5. Step 5: Solve for x
    x = 20,587,252.12/5,217.28
  6. Step 6: Final answer
    x = 3,945.97

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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.