Home / 2,115.30-3,166.46-1,906.17

Finding the Fourth Proportional to 2,115.30, 3,166.46 and 1,906.17

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Solution

The fourth proportional to 2,115.30, 3,166.46 and 1,906.17 is: 2,853.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,115.30 : 3,166.46 = 1,906.17 : x
  2. Step 2: Convert to fraction form
    2,115.30/3,166.46 = 1,906.17/x
  3. Step 3: Cross multiply
    2,115.30x = 3,166.46 × 1,906.17
  4. Step 4: Simplify right side
    2,115.30x = 6,035,811.06
  5. Step 5: Solve for x
    x = 6,035,811.06/2,115.30
  6. Step 6: Final answer
    x = 2,853.41

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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.