Home / 3,886.16-5,362.97-2,117.77

Finding the Fourth Proportional to 3,886.16, 5,362.97 and 2,117.77

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Solution

The fourth proportional to 3,886.16, 5,362.97 and 2,117.77 is: 2,922.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,886.16 : 5,362.97 = 2,117.77 : x
  2. Step 2: Convert to fraction form
    3,886.16/5,362.97 = 2,117.77/x
  3. Step 3: Cross multiply
    3,886.16x = 5,362.97 × 2,117.77
  4. Step 4: Simplify right side
    3,886.16x = 11,357,512.98
  5. Step 5: Solve for x
    x = 11,357,512.98/3,886.16
  6. Step 6: Final answer
    x = 2,922.56

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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.