Home / 1,368.24-2,052.39-394.35

Finding the Fourth Proportional to 1,368.24, 2,052.39 and 394.35

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Solution

The fourth proportional to 1,368.24, 2,052.39 and 394.35 is: 591.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,368.24 : 2,052.39 = 394.35 : x
  2. Step 2: Convert to fraction form
    1,368.24/2,052.39 = 394.35/x
  3. Step 3: Cross multiply
    1,368.24x = 2,052.39 × 394.35
  4. Step 4: Simplify right side
    1,368.24x = 809,360.00
  5. Step 5: Solve for x
    x = 809,360.00/1,368.24
  6. Step 6: Final answer
    x = 591.53

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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.