Home / 3,711.72-5,121.93-2,219.66

Finding the Fourth Proportional to 3,711.72, 5,121.93 and 2,219.66

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Solution

The fourth proportional to 3,711.72, 5,121.93 and 2,219.66 is: 3,062.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,711.72 : 5,121.93 = 2,219.66 : x
  2. Step 2: Convert to fraction form
    3,711.72/5,121.93 = 2,219.66/x
  3. Step 3: Cross multiply
    3,711.72x = 5,121.93 × 2,219.66
  4. Step 4: Simplify right side
    3,711.72x = 11,368,943.14
  5. Step 5: Solve for x
    x = 11,368,943.14/3,711.72
  6. Step 6: Final answer
    x = 3,062.99

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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.