Home / 1,218.96-1,836.80-1,007.28

Finding the Fourth Proportional to 1,218.96, 1,836.80 and 1,007.28

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Solution

The fourth proportional to 1,218.96, 1,836.80 and 1,007.28 is: 1,517.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,218.96 : 1,836.80 = 1,007.28 : x
  2. Step 2: Convert to fraction form
    1,218.96/1,836.80 = 1,007.28/x
  3. Step 3: Cross multiply
    1,218.96x = 1,836.80 × 1,007.28
  4. Step 4: Simplify right side
    1,218.96x = 1,850,171.90
  5. Step 5: Solve for x
    x = 1,850,171.90/1,218.96
  6. Step 6: Final answer
    x = 1,517.83

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.