Home / 3,868.56-5,338.63-2,100.16

Finding the Fourth Proportional to 3,868.56, 5,338.63 and 2,100.16

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Solution

The fourth proportional to 3,868.56, 5,338.63 and 2,100.16 is: 2,898.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,868.56 : 5,338.63 = 2,100.16 : x
  2. Step 2: Convert to fraction form
    3,868.56/5,338.63 = 2,100.16/x
  3. Step 3: Cross multiply
    3,868.56x = 5,338.63 × 2,100.16
  4. Step 4: Simplify right side
    3,868.56x = 11,211,977.18
  5. Step 5: Solve for x
    x = 11,211,977.18/3,868.56
  6. Step 6: Final answer
    x = 2,898.23

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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.