Home / 3,890.23-5,368.97-2,211.89

Finding the Fourth Proportional to 3,890.23, 5,368.97 and 2,211.89

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Solution

The fourth proportional to 3,890.23, 5,368.97 and 2,211.89 is: 3,052.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,890.23 : 5,368.97 = 2,211.89 : x
  2. Step 2: Convert to fraction form
    3,890.23/5,368.97 = 2,211.89/x
  3. Step 3: Cross multiply
    3,890.23x = 5,368.97 × 2,211.89
  4. Step 4: Simplify right side
    3,890.23x = 11,875,555.66
  5. Step 5: Solve for x
    x = 11,875,555.66/3,890.23
  6. Step 6: Final answer
    x = 3,052.66

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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.