Home / 1,086.57-1,629.86-356.14

Finding the Fourth Proportional to 1,086.57, 1,629.86 and 356.14

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Solution

The fourth proportional to 1,086.57, 1,629.86 and 356.14 is: 534.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,086.57 : 1,629.86 = 356.14 : x
  2. Step 2: Convert to fraction form
    1,086.57/1,629.86 = 356.14/x
  3. Step 3: Cross multiply
    1,086.57x = 1,629.86 × 356.14
  4. Step 4: Simplify right side
    1,086.57x = 580,452.49
  5. Step 5: Solve for x
    x = 580,452.49/1,086.57
  6. Step 6: Final answer
    x = 534.21

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Double scale
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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.