Home / 7,988.13-11,981.70-3,544.50

Finding the Fourth Proportional to 7,988.13, 11,981.70 and 3,544.50

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Solution

The fourth proportional to 7,988.13, 11,981.70 and 3,544.50 is: 5,316.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,988.13 : 11,981.70 = 3,544.50 : x
  2. Step 2: Convert to fraction form
    7,988.13/11,981.70 = 3,544.50/x
  3. Step 3: Cross multiply
    7,988.13x = 11,981.70 × 3,544.50
  4. Step 4: Simplify right side
    7,988.13x = 42,469,135.65
  5. Step 5: Solve for x
    x = 42,469,135.65/7,988.13
  6. Step 6: Final answer
    x = 5,316.53

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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.