Home / 3,868.52-5,338.50-2,100.12

Finding the Fourth Proportional to 3,868.52, 5,338.50 and 2,100.12

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Solution

The fourth proportional to 3,868.52, 5,338.50 and 2,100.12 is: 2,898.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,868.52 : 5,338.50 = 2,100.12 : x
  2. Step 2: Convert to fraction form
    3,868.52/5,338.50 = 2,100.12/x
  3. Step 3: Cross multiply
    3,868.52x = 5,338.50 × 2,100.12
  4. Step 4: Simplify right side
    3,868.52x = 11,211,490.62
  5. Step 5: Solve for x
    x = 11,211,490.62/3,868.52
  6. Step 6: Final answer
    x = 2,898.13

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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.