Home / 2,257.64-3,115.32-1,262.75

Finding the Fourth Proportional to 2,257.64, 3,115.32 and 1,262.75

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Solution

The fourth proportional to 2,257.64, 3,115.32 and 1,262.75 is: 1,742.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,257.64 : 3,115.32 = 1,262.75 : x
  2. Step 2: Convert to fraction form
    2,257.64/3,115.32 = 1,262.75/x
  3. Step 3: Cross multiply
    2,257.64x = 3,115.32 × 1,262.75
  4. Step 4: Simplify right side
    2,257.64x = 3,933,870.33
  5. Step 5: Solve for x
    x = 3,933,870.33/2,257.64
  6. Step 6: Final answer
    x = 1,742.47

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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.