Home / 1,414.05-2,117.66-718.89

Finding the Fourth Proportional to 1,414.05, 2,117.66 and 718.89

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Solution

The fourth proportional to 1,414.05, 2,117.66 and 718.89 is: 1,076.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,414.05 : 2,117.66 = 718.89 : x
  2. Step 2: Convert to fraction form
    1,414.05/2,117.66 = 718.89/x
  3. Step 3: Cross multiply
    1,414.05x = 2,117.66 × 718.89
  4. Step 4: Simplify right side
    1,414.05x = 1,522,361.00
  5. Step 5: Solve for x
    x = 1,522,361.00/1,414.05
  6. Step 6: Final answer
    x = 1,076.60

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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.