Home / 1,867.91-2,796.80-1,318.73

Finding the Fourth Proportional to 1,867.91, 2,796.80 and 1,318.73

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Solution

The fourth proportional to 1,867.91, 2,796.80 and 1,318.73 is: 1,974.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,867.91 : 2,796.80 = 1,318.73 : x
  2. Step 2: Convert to fraction form
    1,867.91/2,796.80 = 1,318.73/x
  3. Step 3: Cross multiply
    1,867.91x = 2,796.80 × 1,318.73
  4. Step 4: Simplify right side
    1,867.91x = 3,688,203.49
  5. Step 5: Solve for x
    x = 3,688,203.49/1,867.91
  6. Step 6: Final answer
    x = 1,974.51

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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.