Home / 1,338.27-2,010.90-1,255.25

Finding the Fourth Proportional to 1,338.27, 2,010.90 and 1,255.25

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Solution

The fourth proportional to 1,338.27, 2,010.90 and 1,255.25 is: 1,886.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,338.27 : 2,010.90 = 1,255.25 : x
  2. Step 2: Convert to fraction form
    1,338.27/2,010.90 = 1,255.25/x
  3. Step 3: Cross multiply
    1,338.27x = 2,010.90 × 1,255.25
  4. Step 4: Simplify right side
    1,338.27x = 2,524,172.17
  5. Step 5: Solve for x
    x = 2,524,172.17/1,338.27
  6. Step 6: Final answer
    x = 1,886.15

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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.