Home / 1,318.38-1,968.63-1,179.87

Finding the Fourth Proportional to 1,318.38, 1,968.63 and 1,179.87

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Solution

The fourth proportional to 1,318.38, 1,968.63 and 1,179.87 is: 1,761.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,318.38 : 1,968.63 = 1,179.87 : x
  2. Step 2: Convert to fraction form
    1,318.38/1,968.63 = 1,179.87/x
  3. Step 3: Cross multiply
    1,318.38x = 1,968.63 × 1,179.87
  4. Step 4: Simplify right side
    1,318.38x = 2,322,727.48
  5. Step 5: Solve for x
    x = 2,322,727.48/1,318.38
  6. Step 6: Final answer
    x = 1,761.80

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.