Home / 1,336.80-1,999.29-1,214.17

Finding the Fourth Proportional to 1,336.80, 1,999.29 and 1,214.17

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Solution

The fourth proportional to 1,336.80, 1,999.29 and 1,214.17 is: 1,815.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,336.80 : 1,999.29 = 1,214.17 : x
  2. Step 2: Convert to fraction form
    1,336.80/1,999.29 = 1,214.17/x
  3. Step 3: Cross multiply
    1,336.80x = 1,999.29 × 1,214.17
  4. Step 4: Simplify right side
    1,336.80x = 2,427,485.33
  5. Step 5: Solve for x
    x = 2,427,485.33/1,336.80
  6. Step 6: Final answer
    x = 1,815.90

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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.