Home / 3,118.73-4,678.63-1,270.85

Finding the Fourth Proportional to 3,118.73, 4,678.63 and 1,270.85

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Solution

The fourth proportional to 3,118.73, 4,678.63 and 1,270.85 is: 1,906.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,118.73 : 4,678.63 = 1,270.85 : x
  2. Step 2: Convert to fraction form
    3,118.73/4,678.63 = 1,270.85/x
  3. Step 3: Cross multiply
    3,118.73x = 4,678.63 × 1,270.85
  4. Step 4: Simplify right side
    3,118.73x = 5,945,810.37
  5. Step 5: Solve for x
    x = 5,945,810.37/3,118.73
  6. Step 6: Final answer
    x = 1,906.49

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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 (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.