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Finding the Fourth Proportional to 3,108.76, 4,661.76 and 1,647.56

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Solution

The fourth proportional to 3,108.76, 4,661.76 and 1,647.56 is: 2,470.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,108.76 : 4,661.76 = 1,647.56 : x
  2. Step 2: Convert to fraction form
    3,108.76/4,661.76 = 1,647.56/x
  3. Step 3: Cross multiply
    3,108.76x = 4,661.76 × 1,647.56
  4. Step 4: Simplify right side
    3,108.76x = 7,680,529.31
  5. Step 5: Solve for x
    x = 7,680,529.31/3,108.76
  6. Step 6: Final answer
    x = 2,470.61

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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.