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Finding the Fourth Proportional to 4,987.86, 7,481.81 and 2,354.52

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Solution

The fourth proportional to 4,987.86, 7,481.81 and 2,354.52 is: 3,531.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,987.86 : 7,481.81 = 2,354.52 : x
  2. Step 2: Convert to fraction form
    4,987.86/7,481.81 = 2,354.52/x
  3. Step 3: Cross multiply
    4,987.86x = 7,481.81 × 2,354.52
  4. Step 4: Simplify right side
    4,987.86x = 17,616,059.51
  5. Step 5: Solve for x
    x = 17,616,059.51/4,987.86
  6. Step 6: Final answer
    x = 3,531.79

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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.