Home / 3,868.45-5,338.46-2,100.08

Finding the Fourth Proportional to 3,868.45, 5,338.46 and 2,100.08

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Solution

The fourth proportional to 3,868.45, 5,338.46 and 2,100.08 is: 2,898.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,868.45 : 5,338.46 = 2,100.08 : x
  2. Step 2: Convert to fraction form
    3,868.45/5,338.46 = 2,100.08/x
  3. Step 3: Cross multiply
    3,868.45x = 5,338.46 × 2,100.08
  4. Step 4: Simplify right side
    3,868.45x = 11,211,211.67
  5. Step 5: Solve for x
    x = 11,211,211.67/3,868.45
  6. Step 6: Final answer
    x = 2,898.12

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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.