Home / 1,368.18-2,052.36-394.35

Finding the Fourth Proportional to 1,368.18, 2,052.36 and 394.35

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Solution

The fourth proportional to 1,368.18, 2,052.36 and 394.35 is: 591.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,368.18 : 2,052.36 = 394.35 : x
  2. Step 2: Convert to fraction form
    1,368.18/2,052.36 = 394.35/x
  3. Step 3: Cross multiply
    1,368.18x = 2,052.36 × 394.35
  4. Step 4: Simplify right side
    1,368.18x = 809,348.17
  5. Step 5: Solve for x
    x = 809,348.17/1,368.18
  6. Step 6: Final answer
    x = 591.55

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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.