Home / 3,886.11-5,362.77-2,117.73

Finding the Fourth Proportional to 3,886.11, 5,362.77 and 2,117.73

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Solution

The fourth proportional to 3,886.11, 5,362.77 and 2,117.73 is: 2,922.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,886.11 : 5,362.77 = 2,117.73 : x
  2. Step 2: Convert to fraction form
    3,886.11/5,362.77 = 2,117.73/x
  3. Step 3: Cross multiply
    3,886.11x = 5,362.77 × 2,117.73
  4. Step 4: Simplify right side
    3,886.11x = 11,356,898.91
  5. Step 5: Solve for x
    x = 11,356,898.91/3,886.11
  6. Step 6: Final answer
    x = 2,922.43

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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.