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Finding the Fourth Proportional to 8,608, 11,879.76 and 4,882.72

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Solution

The fourth proportional to 8,608, 11,879.76 and 4,882.72 is: 6,738.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,608 : 11,879.76 = 4,882.72 : x
  2. Step 2: Convert to fraction form
    8,608/11,879.76 = 4,882.72/x
  3. Step 3: Cross multiply
    8,608x = 11,879.76 × 4,882.72
  4. Step 4: Simplify right side
    8,608x = 58,005,541.75
  5. Step 5: Solve for x
    x = 58,005,541.75/8,608
  6. Step 6: Final answer
    x = 6,738.56

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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.