Home / 7,988.22-11,981.52-2,144.07

Finding the Fourth Proportional to 7,988.22, 11,981.52 and 2,144.07

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Solution

The fourth proportional to 7,988.22, 11,981.52 and 2,144.07 is: 3,215.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,988.22 : 11,981.52 = 2,144.07 : x
  2. Step 2: Convert to fraction form
    7,988.22/11,981.52 = 2,144.07/x
  3. Step 3: Cross multiply
    7,988.22x = 11,981.52 × 2,144.07
  4. Step 4: Simplify right side
    7,988.22x = 25,689,217.59
  5. Step 5: Solve for x
    x = 25,689,217.59/7,988.22
  6. Step 6: Final answer
    x = 3,215.89

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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.