Home / 3,891.67-5,370.54-2,123.29

Finding the Fourth Proportional to 3,891.67, 5,370.54 and 2,123.29

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Solution

The fourth proportional to 3,891.67, 5,370.54 and 2,123.29 is: 2,930.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,891.67 : 5,370.54 = 2,123.29 : x
  2. Step 2: Convert to fraction form
    3,891.67/5,370.54 = 2,123.29/x
  3. Step 3: Cross multiply
    3,891.67x = 5,370.54 × 2,123.29
  4. Step 4: Simplify right side
    3,891.67x = 11,403,203.26
  5. Step 5: Solve for x
    x = 11,403,203.26/3,891.67
  6. Step 6: Final answer
    x = 2,930.16

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1.5x scale

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.