Home / 8,442.05-12,640.28-5,662.73

Finding the Fourth Proportional to 8,442.05, 12,640.28 and 5,662.73

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Solution

The fourth proportional to 8,442.05, 12,640.28 and 5,662.73 is: 8,478.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,442.05 : 12,640.28 = 5,662.73 : x
  2. Step 2: Convert to fraction form
    8,442.05/12,640.28 = 5,662.73/x
  3. Step 3: Cross multiply
    8,442.05x = 12,640.28 × 5,662.73
  4. Step 4: Simplify right side
    8,442.05x = 71,578,496.05
  5. Step 5: Solve for x
    x = 71,578,496.05/8,442.05
  6. Step 6: Final answer
    x = 8,478.81

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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.