Home / 9,131.20-13,696.78-2,205.70

Finding the Fourth Proportional to 9,131.20, 13,696.78 and 2,205.70

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Solution

The fourth proportional to 9,131.20, 13,696.78 and 2,205.70 is: 3,308.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,131.20 : 13,696.78 = 2,205.70 : x
  2. Step 2: Convert to fraction form
    9,131.20/13,696.78 = 2,205.70/x
  3. Step 3: Cross multiply
    9,131.20x = 13,696.78 × 2,205.70
  4. Step 4: Simplify right side
    9,131.20x = 30,210,987.65
  5. Step 5: Solve for x
    x = 30,210,987.65/9,131.20
  6. Step 6: Final answer
    x = 3,308.55

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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.