Home / 1,259.33-1,738.38-1,226.21

Finding the Fourth Proportional to 1,259.33, 1,738.38 and 1,226.21

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Solution

The fourth proportional to 1,259.33, 1,738.38 and 1,226.21 is: 1,692.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,259.33 : 1,738.38 = 1,226.21 : x
  2. Step 2: Convert to fraction form
    1,259.33/1,738.38 = 1,226.21/x
  3. Step 3: Cross multiply
    1,259.33x = 1,738.38 × 1,226.21
  4. Step 4: Simplify right side
    1,259.33x = 2,131,618.94
  5. Step 5: Solve for x
    x = 2,131,618.94/1,259.33
  6. Step 6: Final answer
    x = 1,692.66

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Half scale
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Double scale
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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.