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Finding the Fourth Proportional to 4,979.76, 7,472.16 and 2,060.16

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Solution

The fourth proportional to 4,979.76, 7,472.16 and 2,060.16 is: 3,091.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,979.76 : 7,472.16 = 2,060.16 : x
  2. Step 2: Convert to fraction form
    4,979.76/7,472.16 = 2,060.16/x
  3. Step 3: Cross multiply
    4,979.76x = 7,472.16 × 2,060.16
  4. Step 4: Simplify right side
    4,979.76x = 15,393,845.15
  5. Step 5: Solve for x
    x = 15,393,845.15/4,979.76
  6. Step 6: Final answer
    x = 3,091.28

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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.