Home / 1,352.31-2,026.84-486.15

Finding the Fourth Proportional to 1,352.31, 2,026.84 and 486.15

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Solution

The fourth proportional to 1,352.31, 2,026.84 and 486.15 is: 728.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,352.31 : 2,026.84 = 486.15 : x
  2. Step 2: Convert to fraction form
    1,352.31/2,026.84 = 486.15/x
  3. Step 3: Cross multiply
    1,352.31x = 2,026.84 × 486.15
  4. Step 4: Simplify right side
    1,352.31x = 985,348.27
  5. Step 5: Solve for x
    x = 985,348.27/1,352.31
  6. Step 6: Final answer
    x = 728.64

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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.