Home / 1,028.36-1,419.16-608.56

Finding the Fourth Proportional to 1,028.36, 1,419.16 and 608.56

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Solution

The fourth proportional to 1,028.36, 1,419.16 and 608.56 is: 839.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,028.36 : 1,419.16 = 608.56 : x
  2. Step 2: Convert to fraction form
    1,028.36/1,419.16 = 608.56/x
  3. Step 3: Cross multiply
    1,028.36x = 1,419.16 × 608.56
  4. Step 4: Simplify right side
    1,028.36x = 863,640.47
  5. Step 5: Solve for x
    x = 863,640.47/1,028.36
  6. Step 6: Final answer
    x = 839.82

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.