Home / 3,886.29-5,362.94-2,117.86

Finding the Fourth Proportional to 3,886.29, 5,362.94 and 2,117.86

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Solution

The fourth proportional to 3,886.29, 5,362.94 and 2,117.86 is: 2,922.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,886.29 : 5,362.94 = 2,117.86 : x
  2. Step 2: Convert to fraction form
    3,886.29/5,362.94 = 2,117.86/x
  3. Step 3: Cross multiply
    3,886.29x = 5,362.94 × 2,117.86
  4. Step 4: Simplify right side
    3,886.29x = 11,357,924.00
  5. Step 5: Solve for x
    x = 11,357,924.00/3,886.29
  6. Step 6: Final answer
    x = 2,922.57

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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.