Home / 5,215.62-7,197.63-3,119.34

Finding the Fourth Proportional to 5,215.62, 7,197.63 and 3,119.34

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Solution

The fourth proportional to 5,215.62, 7,197.63 and 3,119.34 is: 4,304.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,215.62 : 7,197.63 = 3,119.34 : x
  2. Step 2: Convert to fraction form
    5,215.62/7,197.63 = 3,119.34/x
  3. Step 3: Cross multiply
    5,215.62x = 7,197.63 × 3,119.34
  4. Step 4: Simplify right side
    5,215.62x = 22,451,855.16
  5. Step 5: Solve for x
    x = 22,451,855.16/5,215.62
  6. Step 6: Final answer
    x = 4,304.73

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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.