Home / 2,191.11-3,271.06-2,114.22

Finding the Fourth Proportional to 2,191.11, 3,271.06 and 2,114.22

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Solution

The fourth proportional to 2,191.11, 3,271.06 and 2,114.22 is: 3,156.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,191.11 : 3,271.06 = 2,114.22 : x
  2. Step 2: Convert to fraction form
    2,191.11/3,271.06 = 2,114.22/x
  3. Step 3: Cross multiply
    2,191.11x = 3,271.06 × 2,114.22
  4. Step 4: Simplify right side
    2,191.11x = 6,915,755.38
  5. Step 5: Solve for x
    x = 6,915,755.38/2,191.11
  6. Step 6: Final answer
    x = 3,156.27

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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.