Home / 1,640.84-2,266.92-1,394.73

Finding the Fourth Proportional to 1,640.84, 2,266.92 and 1,394.73

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Solution

The fourth proportional to 1,640.84, 2,266.92 and 1,394.73 is: 1,926.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,640.84 : 2,266.92 = 1,394.73 : x
  2. Step 2: Convert to fraction form
    1,640.84/2,266.92 = 1,394.73/x
  3. Step 3: Cross multiply
    1,640.84x = 2,266.92 × 1,394.73
  4. Step 4: Simplify right side
    1,640.84x = 3,161,741.33
  5. Step 5: Solve for x
    x = 3,161,741.33/1,640.84
  6. Step 6: Final answer
    x = 1,926.91

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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.