Home / 5,215.25-7,197.05-3,119.87

Finding the Fourth Proportional to 5,215.25, 7,197.05 and 3,119.87

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Solution

The fourth proportional to 5,215.25, 7,197.05 and 3,119.87 is: 4,305.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,215.25 : 7,197.05 = 3,119.87 : x
  2. Step 2: Convert to fraction form
    5,215.25/7,197.05 = 3,119.87/x
  3. Step 3: Cross multiply
    5,215.25x = 7,197.05 × 3,119.87
  4. Step 4: Simplify right side
    5,215.25x = 22,453,844.78
  5. Step 5: Solve for x
    x = 22,453,844.78/5,215.25
  6. Step 6: Final answer
    x = 4,305.42

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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.