Home / 3,612.65-5,420.32-2,209.95

Finding the Fourth Proportional to 3,612.65, 5,420.32 and 2,209.95

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Solution

The fourth proportional to 3,612.65, 5,420.32 and 2,209.95 is: 3,315.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,612.65 : 5,420.32 = 2,209.95 : x
  2. Step 2: Convert to fraction form
    3,612.65/5,420.32 = 2,209.95/x
  3. Step 3: Cross multiply
    3,612.65x = 5,420.32 × 2,209.95
  4. Step 4: Simplify right side
    3,612.65x = 11,978,636.18
  5. Step 5: Solve for x
    x = 11,978,636.18/3,612.65
  6. Step 6: Final answer
    x = 3,315.75

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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.