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Finding the Fourth Proportional to 5,016.80, 7,528.80 and 2,823.20

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Solution

The fourth proportional to 5,016.80, 7,528.80 and 2,823.20 is: 4,236.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,016.80 : 7,528.80 = 2,823.20 : x
  2. Step 2: Convert to fraction form
    5,016.80/7,528.80 = 2,823.20/x
  3. Step 3: Cross multiply
    5,016.80x = 7,528.80 × 2,823.20
  4. Step 4: Simplify right side
    5,016.80x = 21,255,308.16
  5. Step 5: Solve for x
    x = 21,255,308.16/5,016.80
  6. Step 6: Final answer
    x = 4,236.83

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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.