Home / 1,368.10-2,052.42-394.21

Finding the Fourth Proportional to 1,368.10, 2,052.42 and 394.21

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Solution

The fourth proportional to 1,368.10, 2,052.42 and 394.21 is: 591.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,368.10 : 2,052.42 = 394.21 : x
  2. Step 2: Convert to fraction form
    1,368.10/2,052.42 = 394.21/x
  3. Step 3: Cross multiply
    1,368.10x = 2,052.42 × 394.21
  4. Step 4: Simplify right side
    1,368.10x = 809,084.49
  5. Step 5: Solve for x
    x = 809,084.49/1,368.10
  6. Step 6: Final answer
    x = 591.39

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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.