Home / 2,272.71-3,139.57-2,163.36

Finding the Fourth Proportional to 2,272.71, 3,139.57 and 2,163.36

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Solution

The fourth proportional to 2,272.71, 3,139.57 and 2,163.36 is: 2,988.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,272.71 : 3,139.57 = 2,163.36 : x
  2. Step 2: Convert to fraction form
    2,272.71/3,139.57 = 2,163.36/x
  3. Step 3: Cross multiply
    2,272.71x = 3,139.57 × 2,163.36
  4. Step 4: Simplify right side
    2,272.71x = 6,792,020.16
  5. Step 5: Solve for x
    x = 6,792,020.16/2,272.71
  6. Step 6: Final answer
    x = 2,988.51

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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.