Home / 3,886.10-5,362.93-2,117.82

Finding the Fourth Proportional to 3,886.10, 5,362.93 and 2,117.82

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Solution

The fourth proportional to 3,886.10, 5,362.93 and 2,117.82 is: 2,922.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,886.10 : 5,362.93 = 2,117.82 : x
  2. Step 2: Convert to fraction form
    3,886.10/5,362.93 = 2,117.82/x
  3. Step 3: Cross multiply
    3,886.10x = 5,362.93 × 2,117.82
  4. Step 4: Simplify right side
    3,886.10x = 11,357,734.04
  5. Step 5: Solve for x
    x = 11,357,734.04/3,886.10
  6. Step 6: Final answer
    x = 2,922.65

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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.