Home / 7,891.78-11,834.70-3,993.52

Finding the Fourth Proportional to 7,891.78, 11,834.70 and 3,993.52

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Solution

The fourth proportional to 7,891.78, 11,834.70 and 3,993.52 is: 5,988.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,891.78 : 11,834.70 = 3,993.52 : x
  2. Step 2: Convert to fraction form
    7,891.78/11,834.70 = 3,993.52/x
  3. Step 3: Cross multiply
    7,891.78x = 11,834.70 × 3,993.52
  4. Step 4: Simplify right side
    7,891.78x = 47,262,111.14
  5. Step 5: Solve for x
    x = 47,262,111.14/7,891.78
  6. Step 6: Final answer
    x = 5,988.78

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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.