Home / 2,161.29-3,226.15-1,855.11

Finding the Fourth Proportional to 2,161.29, 3,226.15 and 1,855.11

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Solution

The fourth proportional to 2,161.29, 3,226.15 and 1,855.11 is: 2,769.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,161.29 : 3,226.15 = 1,855.11 : x
  2. Step 2: Convert to fraction form
    2,161.29/3,226.15 = 1,855.11/x
  3. Step 3: Cross multiply
    2,161.29x = 3,226.15 × 1,855.11
  4. Step 4: Simplify right side
    2,161.29x = 5,984,837.72
  5. Step 5: Solve for x
    x = 5,984,837.72/2,161.29
  6. Step 6: Final answer
    x = 2,769.11

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.