Home / 1,086.68-1,629.50-356.18

Finding the Fourth Proportional to 1,086.68, 1,629.50 and 356.18

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Solution

The fourth proportional to 1,086.68, 1,629.50 and 356.18 is: 534.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,086.68 : 1,629.50 = 356.18 : x
  2. Step 2: Convert to fraction form
    1,086.68/1,629.50 = 356.18/x
  3. Step 3: Cross multiply
    1,086.68x = 1,629.50 × 356.18
  4. Step 4: Simplify right side
    1,086.68x = 580,395.31
  5. Step 5: Solve for x
    x = 580,395.31/1,086.68
  6. Step 6: Final answer
    x = 534.10

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Double scale
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1.5x scale

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.