Home / 7,081.16-10,621.79-2,150.80

Finding the Fourth Proportional to 7,081.16, 10,621.79 and 2,150.80

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Solution

The fourth proportional to 7,081.16, 10,621.79 and 2,150.80 is: 3,226.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,081.16 : 10,621.79 = 2,150.80 : x
  2. Step 2: Convert to fraction form
    7,081.16/10,621.79 = 2,150.80/x
  3. Step 3: Cross multiply
    7,081.16x = 10,621.79 × 2,150.80
  4. Step 4: Simplify right side
    7,081.16x = 22,845,324.75
  5. Step 5: Solve for x
    x = 22,845,324.75/7,081.16
  6. Step 6: Final answer
    x = 3,226.21

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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.