Home / 3,891.66-5,370.46-2,123.25

Finding the Fourth Proportional to 3,891.66, 5,370.46 and 2,123.25

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Solution

The fourth proportional to 3,891.66, 5,370.46 and 2,123.25 is: 2,930.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,891.66 : 5,370.46 = 2,123.25 : x
  2. Step 2: Convert to fraction form
    3,891.66/5,370.46 = 2,123.25/x
  3. Step 3: Cross multiply
    3,891.66x = 5,370.46 × 2,123.25
  4. Step 4: Simplify right side
    3,891.66x = 11,402,829.20
  5. Step 5: Solve for x
    x = 11,402,829.20/3,891.66
  6. Step 6: Final answer
    x = 2,930.07

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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.