Home / 2,163.38-2,984.07-1,278.55

Finding the Fourth Proportional to 2,163.38, 2,984.07 and 1,278.55

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Solution

The fourth proportional to 2,163.38, 2,984.07 and 1,278.55 is: 1,763.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,163.38 : 2,984.07 = 1,278.55 : x
  2. Step 2: Convert to fraction form
    2,163.38/2,984.07 = 1,278.55/x
  3. Step 3: Cross multiply
    2,163.38x = 2,984.07 × 1,278.55
  4. Step 4: Simplify right side
    2,163.38x = 3,815,291.22
  5. Step 5: Solve for x
    x = 3,815,291.22/2,163.38
  6. Step 6: Final answer
    x = 1,763.58

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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.