Home / 2,969.45-4,097.82-1,643.21

Finding the Fourth Proportional to 2,969.45, 4,097.82 and 1,643.21

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Solution

The fourth proportional to 2,969.45, 4,097.82 and 1,643.21 is: 2,267.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,969.45 : 4,097.82 = 1,643.21 : x
  2. Step 2: Convert to fraction form
    2,969.45/4,097.82 = 1,643.21/x
  3. Step 3: Cross multiply
    2,969.45x = 4,097.82 × 1,643.21
  4. Step 4: Simplify right side
    2,969.45x = 6,733,578.80
  5. Step 5: Solve for x
    x = 6,733,578.80/2,969.45
  6. Step 6: Final answer
    x = 2,267.62

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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.