Home / 1,028.11-1,418.85-608.71

Finding the Fourth Proportional to 1,028.11, 1,418.85 and 608.71

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Solution

The fourth proportional to 1,028.11, 1,418.85 and 608.71 is: 840.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,028.11 : 1,418.85 = 608.71 : x
  2. Step 2: Convert to fraction form
    1,028.11/1,418.85 = 608.71/x
  3. Step 3: Cross multiply
    1,028.11x = 1,418.85 × 608.71
  4. Step 4: Simplify right side
    1,028.11x = 863,668.18
  5. Step 5: Solve for x
    x = 863,668.18/1,028.11
  6. Step 6: Final answer
    x = 840.05

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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.