Home / 4,120.80-5,680.22-3,122.06

Finding the Fourth Proportional to 4,120.80, 5,680.22 and 3,122.06

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Solution

The fourth proportional to 4,120.80, 5,680.22 and 3,122.06 is: 4,303.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,120.80 : 5,680.22 = 3,122.06 : x
  2. Step 2: Convert to fraction form
    4,120.80/5,680.22 = 3,122.06/x
  3. Step 3: Cross multiply
    4,120.80x = 5,680.22 × 3,122.06
  4. Step 4: Simplify right side
    4,120.80x = 17,733,987.65
  5. Step 5: Solve for x
    x = 17,733,987.65/4,120.80
  6. Step 6: Final answer
    x = 4,303.53

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.