Home / 3,243.90-4,476.87-1,916.94

Finding the Fourth Proportional to 3,243.90, 4,476.87 and 1,916.94

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Solution

The fourth proportional to 3,243.90, 4,476.87 and 1,916.94 is: 2,645.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,243.90 : 4,476.87 = 1,916.94 : x
  2. Step 2: Convert to fraction form
    3,243.90/4,476.87 = 1,916.94/x
  3. Step 3: Cross multiply
    3,243.90x = 4,476.87 × 1,916.94
  4. Step 4: Simplify right side
    3,243.90x = 8,581,891.18
  5. Step 5: Solve for x
    x = 8,581,891.18/3,243.90
  6. Step 6: Final answer
    x = 2,645.55

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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.