Home / 3,605.21-5,408.48-1,140.65

Finding the Fourth Proportional to 3,605.21, 5,408.48 and 1,140.65

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Solution

The fourth proportional to 3,605.21, 5,408.48 and 1,140.65 is: 1,711.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,605.21 : 5,408.48 = 1,140.65 : x
  2. Step 2: Convert to fraction form
    3,605.21/5,408.48 = 1,140.65/x
  3. Step 3: Cross multiply
    3,605.21x = 5,408.48 × 1,140.65
  4. Step 4: Simplify right side
    3,605.21x = 6,169,149.97
  5. Step 5: Solve for x
    x = 6,169,149.97/3,605.21
  6. Step 6: Final answer
    x = 1,711.18

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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.