Home / 8,987.42-13,481.64-2,748.40

Finding the Fourth Proportional to 8,987.42, 13,481.64 and 2,748.40

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Solution

The fourth proportional to 8,987.42, 13,481.64 and 2,748.40 is: 4,122.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,987.42 : 13,481.64 = 2,748.40 : x
  2. Step 2: Convert to fraction form
    8,987.42/13,481.64 = 2,748.40/x
  3. Step 3: Cross multiply
    8,987.42x = 13,481.64 × 2,748.40
  4. Step 4: Simplify right side
    8,987.42x = 37,052,905.67
  5. Step 5: Solve for x
    x = 37,052,905.67/8,987.42
  6. Step 6: Final answer
    x = 4,122.75

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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.