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Finding the Fourth Proportional to 5,016.80, 7,528.08 and 3,918.08

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Solution

The fourth proportional to 5,016.80, 7,528.08 and 3,918.08 is: 5,879.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,016.80 : 7,528.08 = 3,918.08 : x
  2. Step 2: Convert to fraction form
    5,016.80/7,528.08 = 3,918.08/x
  3. Step 3: Cross multiply
    5,016.80x = 7,528.08 × 3,918.08
  4. Step 4: Simplify right side
    5,016.80x = 29,495,619.69
  5. Step 5: Solve for x
    x = 29,495,619.69/5,016.80
  6. Step 6: Final answer
    x = 5,879.37

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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.