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Finding the Fourth Proportional to 4,471.76, 6,707.61 and 1,872.88

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Solution

The fourth proportional to 4,471.76, 6,707.61 and 1,872.88 is: 2,809.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,471.76 : 6,707.61 = 1,872.88 : x
  2. Step 2: Convert to fraction form
    4,471.76/6,707.61 = 1,872.88/x
  3. Step 3: Cross multiply
    4,471.76x = 6,707.61 × 1,872.88
  4. Step 4: Simplify right side
    4,471.76x = 12,562,531.85
  5. Step 5: Solve for x
    x = 12,562,531.85/4,471.76
  6. Step 6: Final answer
    x = 2,809.30

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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.