Home / 3,421.69-4,721.92-1,849.78

Finding the Fourth Proportional to 3,421.69, 4,721.92 and 1,849.78

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Solution

The fourth proportional to 3,421.69, 4,721.92 and 1,849.78 is: 2,552.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,421.69 : 4,721.92 = 1,849.78 : x
  2. Step 2: Convert to fraction form
    3,421.69/4,721.92 = 1,849.78/x
  3. Step 3: Cross multiply
    3,421.69x = 4,721.92 × 1,849.78
  4. Step 4: Simplify right side
    3,421.69x = 8,734,496.75
  5. Step 5: Solve for x
    x = 8,734,496.75/3,421.69
  6. Step 6: Final answer
    x = 2,552.69

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1.5x scale

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.