Home / 3,888.39-5,366.00-2,120.03

Finding the Fourth Proportional to 3,888.39, 5,366.00 and 2,120.03

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Solution

The fourth proportional to 3,888.39, 5,366.00 and 2,120.03 is: 2,925.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,888.39 : 5,366.00 = 2,120.03 : x
  2. Step 2: Convert to fraction form
    3,888.39/5,366.00 = 2,120.03/x
  3. Step 3: Cross multiply
    3,888.39x = 5,366.00 × 2,120.03
  4. Step 4: Simplify right side
    3,888.39x = 11,376,059.45
  5. Step 5: Solve for x
    x = 11,376,059.45/3,888.39
  6. Step 6: Final answer
    x = 2,925.65

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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.