Home / 1,962.87-2,942.28-1,139.73

Finding the Fourth Proportional to 1,962.87, 2,942.28 and 1,139.73

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Solution

The fourth proportional to 1,962.87, 2,942.28 and 1,139.73 is: 1,708.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,962.87 : 2,942.28 = 1,139.73 : x
  2. Step 2: Convert to fraction form
    1,962.87/2,942.28 = 1,139.73/x
  3. Step 3: Cross multiply
    1,962.87x = 2,942.28 × 1,139.73
  4. Step 4: Simplify right side
    1,962.87x = 3,353,404.78
  5. Step 5: Solve for x
    x = 3,353,404.78/1,962.87
  6. Step 6: Final answer
    x = 1,708.42

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.