Home / 5,414.80-8,112.48-5,123.20

Finding the Fourth Proportional to 5,414.80, 8,112.48 and 5,123.20

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Solution

The fourth proportional to 5,414.80, 8,112.48 and 5,123.20 is: 7,675.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,414.80 : 8,112.48 = 5,123.20 : x
  2. Step 2: Convert to fraction form
    5,414.80/8,112.48 = 5,123.20/x
  3. Step 3: Cross multiply
    5,414.80x = 8,112.48 × 5,123.20
  4. Step 4: Simplify right side
    5,414.80x = 41,561,857.54
  5. Step 5: Solve for x
    x = 41,561,857.54/5,414.80
  6. Step 6: Final answer
    x = 7,675.60

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.