Home / 3,886.24-5,362.92-2,117.80

Finding the Fourth Proportional to 3,886.24, 5,362.92 and 2,117.80

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Solution

The fourth proportional to 3,886.24, 5,362.92 and 2,117.80 is: 2,922.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,886.24 : 5,362.92 = 2,117.80 : x
  2. Step 2: Convert to fraction form
    3,886.24/5,362.92 = 2,117.80/x
  3. Step 3: Cross multiply
    3,886.24x = 5,362.92 × 2,117.80
  4. Step 4: Simplify right side
    3,886.24x = 11,357,591.98
  5. Step 5: Solve for x
    x = 11,357,591.98/3,886.24
  6. Step 6: Final answer
    x = 2,922.51

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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.