Home / 3,109.29-4,662.33-917.73

Finding the Fourth Proportional to 3,109.29, 4,662.33 and 917.73

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Solution

The fourth proportional to 3,109.29, 4,662.33 and 917.73 is: 1,376.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,109.29 : 4,662.33 = 917.73 : x
  2. Step 2: Convert to fraction form
    3,109.29/4,662.33 = 917.73/x
  3. Step 3: Cross multiply
    3,109.29x = 4,662.33 × 917.73
  4. Step 4: Simplify right side
    3,109.29x = 4,278,760.11
  5. Step 5: Solve for x
    x = 4,278,760.11/3,109.29
  6. Step 6: Final answer
    x = 1,376.12

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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.