Home / 7,987.44-11,981.16-2,143.83

Finding the Fourth Proportional to 7,987.44, 11,981.16 and 2,143.83

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Solution

The fourth proportional to 7,987.44, 11,981.16 and 2,143.83 is: 3,215.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,987.44 : 11,981.16 = 2,143.83 : x
  2. Step 2: Convert to fraction form
    7,987.44/11,981.16 = 2,143.83/x
  3. Step 3: Cross multiply
    7,987.44x = 11,981.16 × 2,143.83
  4. Step 4: Simplify right side
    7,987.44x = 25,685,570.24
  5. Step 5: Solve for x
    x = 25,685,570.24/7,987.44
  6. Step 6: Final answer
    x = 3,215.75

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Similar ratio
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1.5x scale

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.