Home / 2,819.17-3,889.11-1,771.03

Finding the Fourth Proportional to 2,819.17, 3,889.11 and 1,771.03

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Solution

The fourth proportional to 2,819.17, 3,889.11 and 1,771.03 is: 2,443.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,819.17 : 3,889.11 = 1,771.03 : x
  2. Step 2: Convert to fraction form
    2,819.17/3,889.11 = 1,771.03/x
  3. Step 3: Cross multiply
    2,819.17x = 3,889.11 × 1,771.03
  4. Step 4: Simplify right side
    2,819.17x = 6,887,730.48
  5. Step 5: Solve for x
    x = 6,887,730.48/2,819.17
  6. Step 6: Final answer
    x = 2,443.18

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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.