Home / 7,981.04-11,971.55-2,137.49

Finding the Fourth Proportional to 7,981.04, 11,971.55 and 2,137.49

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Solution

The fourth proportional to 7,981.04, 11,971.55 and 2,137.49 is: 3,206.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,981.04 : 11,971.55 = 2,137.49 : x
  2. Step 2: Convert to fraction form
    7,981.04/11,971.55 = 2,137.49/x
  3. Step 3: Cross multiply
    7,981.04x = 11,971.55 × 2,137.49
  4. Step 4: Simplify right side
    7,981.04x = 25,589,054.78
  5. Step 5: Solve for x
    x = 25,589,054.78/7,981.04
  6. Step 6: Final answer
    x = 3,206.23

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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.