Home / 2,155.97-3,236.58-1,426.97

Finding the Fourth Proportional to 2,155.97, 3,236.58 and 1,426.97

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Solution

The fourth proportional to 2,155.97, 3,236.58 and 1,426.97 is: 2,142.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,155.97 : 3,236.58 = 1,426.97 : x
  2. Step 2: Convert to fraction form
    2,155.97/3,236.58 = 1,426.97/x
  3. Step 3: Cross multiply
    2,155.97x = 3,236.58 × 1,426.97
  4. Step 4: Simplify right side
    2,155.97x = 4,618,486.38
  5. Step 5: Solve for x
    x = 4,618,486.38/2,155.97
  6. Step 6: Final answer
    x = 2,142.19

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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.