Home / 3,885.92-5,362.57-2,117.52

Finding the Fourth Proportional to 3,885.92, 5,362.57 and 2,117.52

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Solution

The fourth proportional to 3,885.92, 5,362.57 and 2,117.52 is: 2,922.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,885.92 : 5,362.57 = 2,117.52 : x
  2. Step 2: Convert to fraction form
    3,885.92/5,362.57 = 2,117.52/x
  3. Step 3: Cross multiply
    3,885.92x = 5,362.57 × 2,117.52
  4. Step 4: Simplify right side
    3,885.92x = 11,355,377.94
  5. Step 5: Solve for x
    x = 11,355,377.94/3,885.92
  6. Step 6: Final answer
    x = 2,922.19

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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.