Home / 2,078.23-3,115.17-845.14

Finding the Fourth Proportional to 2,078.23, 3,115.17 and 845.14

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Solution

The fourth proportional to 2,078.23, 3,115.17 and 845.14 is: 1,266.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,078.23 : 3,115.17 = 845.14 : x
  2. Step 2: Convert to fraction form
    2,078.23/3,115.17 = 845.14/x
  3. Step 3: Cross multiply
    2,078.23x = 3,115.17 × 845.14
  4. Step 4: Simplify right side
    2,078.23x = 2,632,754.77
  5. Step 5: Solve for x
    x = 2,632,754.77/2,078.23
  6. Step 6: Final answer
    x = 1,266.83

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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.