Home / 5,230-7,217.34-2,872.12

Finding the Fourth Proportional to 5,230, 7,217.34 and 2,872.12

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Solution

The fourth proportional to 5,230, 7,217.34 and 2,872.12 is: 3,963.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,230 : 7,217.34 = 2,872.12 : x
  2. Step 2: Convert to fraction form
    5,230/7,217.34 = 2,872.12/x
  3. Step 3: Cross multiply
    5,230x = 7,217.34 × 2,872.12
  4. Step 4: Simplify right side
    5,230x = 20,729,066.56
  5. Step 5: Solve for x
    x = 20,729,066.56/5,230
  6. Step 6: Final answer
    x = 3,963.49

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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.