Home / 1,387.33-1,912.65-1,344.33

Finding the Fourth Proportional to 1,387.33, 1,912.65 and 1,344.33

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Solution

The fourth proportional to 1,387.33, 1,912.65 and 1,344.33 is: 1,853.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,387.33 : 1,912.65 = 1,344.33 : x
  2. Step 2: Convert to fraction form
    1,387.33/1,912.65 = 1,344.33/x
  3. Step 3: Cross multiply
    1,387.33x = 1,912.65 × 1,344.33
  4. Step 4: Simplify right side
    1,387.33x = 2,571,227.73
  5. Step 5: Solve for x
    x = 2,571,227.73/1,387.33
  6. Step 6: Final answer
    x = 1,853.37

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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.