Home / 7,987.03-11,981.72-2,439.64

Finding the Fourth Proportional to 7,987.03, 11,981.72 and 2,439.64

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Solution

The fourth proportional to 7,987.03, 11,981.72 and 2,439.64 is: 3,659.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,987.03 : 11,981.72 = 2,439.64 : x
  2. Step 2: Convert to fraction form
    7,987.03/11,981.72 = 2,439.64/x
  3. Step 3: Cross multiply
    7,987.03x = 11,981.72 × 2,439.64
  4. Step 4: Simplify right side
    7,987.03x = 29,231,138.16
  5. Step 5: Solve for x
    x = 29,231,138.16/7,987.03
  6. Step 6: Final answer
    x = 3,659.83

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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.