Home / 1,352.36-2,028.72-486.56

Finding the Fourth Proportional to 1,352.36, 2,028.72 and 486.56

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Solution

The fourth proportional to 1,352.36, 2,028.72 and 486.56 is: 729.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,352.36 : 2,028.72 = 486.56 : x
  2. Step 2: Convert to fraction form
    1,352.36/2,028.72 = 486.56/x
  3. Step 3: Cross multiply
    1,352.36x = 2,028.72 × 486.56
  4. Step 4: Simplify right side
    1,352.36x = 987,094.00
  5. Step 5: Solve for x
    x = 987,094.00/1,352.36
  6. Step 6: Final answer
    x = 729.90

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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.