Home / 1,352.09-2,027.90-621.61

Finding the Fourth Proportional to 1,352.09, 2,027.90 and 621.61

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Solution

The fourth proportional to 1,352.09, 2,027.90 and 621.61 is: 932.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,352.09 : 2,027.90 = 621.61 : x
  2. Step 2: Convert to fraction form
    1,352.09/2,027.90 = 621.61/x
  3. Step 3: Cross multiply
    1,352.09x = 2,027.90 × 621.61
  4. Step 4: Simplify right side
    1,352.09x = 1,260,559.40
  5. Step 5: Solve for x
    x = 1,260,559.40/1,352.09
  6. Step 6: Final answer
    x = 932.30

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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.