Home / 1,906.38-2,631.15-1,109.84

Finding the Fourth Proportional to 1,906.38, 2,631.15 and 1,109.84

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Solution

The fourth proportional to 1,906.38, 2,631.15 and 1,109.84 is: 1,531.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,906.38 : 2,631.15 = 1,109.84 : x
  2. Step 2: Convert to fraction form
    1,906.38/2,631.15 = 1,109.84/x
  3. Step 3: Cross multiply
    1,906.38x = 2,631.15 × 1,109.84
  4. Step 4: Simplify right side
    1,906.38x = 2,920,142.36
  5. Step 5: Solve for x
    x = 2,920,142.36/1,906.38
  6. Step 6: Final answer
    x = 1,531.77

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.