Home / 3,885.76-5,362.34-2,117.37

Finding the Fourth Proportional to 3,885.76, 5,362.34 and 2,117.37

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Solution

The fourth proportional to 3,885.76, 5,362.34 and 2,117.37 is: 2,921.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,885.76 : 5,362.34 = 2,117.37 : x
  2. Step 2: Convert to fraction form
    3,885.76/5,362.34 = 2,117.37/x
  3. Step 3: Cross multiply
    3,885.76x = 5,362.34 × 2,117.37
  4. Step 4: Simplify right side
    3,885.76x = 11,354,067.37
  5. Step 5: Solve for x
    x = 11,354,067.37/3,885.76
  6. Step 6: Final answer
    x = 2,921.97

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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.