Home / 2,291.60-3,431.78-2,069.73

Finding the Fourth Proportional to 2,291.60, 3,431.78 and 2,069.73

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Solution

The fourth proportional to 2,291.60, 3,431.78 and 2,069.73 is: 3,099.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,291.60 : 3,431.78 = 2,069.73 : x
  2. Step 2: Convert to fraction form
    2,291.60/3,431.78 = 2,069.73/x
  3. Step 3: Cross multiply
    2,291.60x = 3,431.78 × 2,069.73
  4. Step 4: Simplify right side
    2,291.60x = 7,102,855.43
  5. Step 5: Solve for x
    x = 7,102,855.43/2,291.60
  6. Step 6: Final answer
    x = 3,099.51

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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.