Home / 4,209.69-5,809.86-2,721.90

Finding the Fourth Proportional to 4,209.69, 5,809.86 and 2,721.90

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Solution

The fourth proportional to 4,209.69, 5,809.86 and 2,721.90 is: 3,756.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,209.69 : 5,809.86 = 2,721.90 : x
  2. Step 2: Convert to fraction form
    4,209.69/5,809.86 = 2,721.90/x
  3. Step 3: Cross multiply
    4,209.69x = 5,809.86 × 2,721.90
  4. Step 4: Simplify right side
    4,209.69x = 15,813,857.93
  5. Step 5: Solve for x
    x = 15,813,857.93/4,209.69
  6. Step 6: Final answer
    x = 3,756.54

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.