Home / 2,819.25-3,890.57-1,641.11

Finding the Fourth Proportional to 2,819.25, 3,890.57 and 1,641.11

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Solution

The fourth proportional to 2,819.25, 3,890.57 and 1,641.11 is: 2,264.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,819.25 : 3,890.57 = 1,641.11 : x
  2. Step 2: Convert to fraction form
    2,819.25/3,890.57 = 1,641.11/x
  3. Step 3: Cross multiply
    2,819.25x = 3,890.57 × 1,641.11
  4. Step 4: Simplify right side
    2,819.25x = 6,384,825.67
  5. Step 5: Solve for x
    x = 6,384,825.67/2,819.25
  6. Step 6: Final answer
    x = 2,264.72

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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.