Home / 6,121.09-9,180.90-1,679.12

Finding the Fourth Proportional to 6,121.09, 9,180.90 and 1,679.12

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Solution

The fourth proportional to 6,121.09, 9,180.90 and 1,679.12 is: 2,518.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,121.09 : 9,180.90 = 1,679.12 : x
  2. Step 2: Convert to fraction form
    6,121.09/9,180.90 = 1,679.12/x
  3. Step 3: Cross multiply
    6,121.09x = 9,180.90 × 1,679.12
  4. Step 4: Simplify right side
    6,121.09x = 15,415,838.65
  5. Step 5: Solve for x
    x = 15,415,838.65/6,121.09
  6. Step 6: Final answer
    x = 2,518.48

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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.