Home / 5,230.19-7,217.55-2,872.31

Finding the Fourth Proportional to 5,230.19, 7,217.55 and 2,872.31

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Solution

The fourth proportional to 5,230.19, 7,217.55 and 2,872.31 is: 3,963.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,230.19 : 7,217.55 = 2,872.31 : x
  2. Step 2: Convert to fraction form
    5,230.19/7,217.55 = 2,872.31/x
  3. Step 3: Cross multiply
    5,230.19x = 7,217.55 × 2,872.31
  4. Step 4: Simplify right side
    5,230.19x = 20,731,004.95
  5. Step 5: Solve for x
    x = 20,731,004.95/5,230.19
  6. Step 6: Final answer
    x = 3,963.72

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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.