Home / 2,257.23-3,115.13-1,262.69

Finding the Fourth Proportional to 2,257.23, 3,115.13 and 1,262.69

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Solution

The fourth proportional to 2,257.23, 3,115.13 and 1,262.69 is: 1,742.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,257.23 : 3,115.13 = 1,262.69 : x
  2. Step 2: Convert to fraction form
    2,257.23/3,115.13 = 1,262.69/x
  3. Step 3: Cross multiply
    2,257.23x = 3,115.13 × 1,262.69
  4. Step 4: Simplify right side
    2,257.23x = 3,933,443.50
  5. Step 5: Solve for x
    x = 3,933,443.50/2,257.23
  6. Step 6: Final answer
    x = 1,742.60

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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.