Home / 5,287.05-7,930.31-2,166.28

Finding the Fourth Proportional to 5,287.05, 7,930.31 and 2,166.28

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Solution

The fourth proportional to 5,287.05, 7,930.31 and 2,166.28 is: 3,249.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,287.05 : 7,930.31 = 2,166.28 : x
  2. Step 2: Convert to fraction form
    5,287.05/7,930.31 = 2,166.28/x
  3. Step 3: Cross multiply
    5,287.05x = 7,930.31 × 2,166.28
  4. Step 4: Simplify right side
    5,287.05x = 17,179,241.29
  5. Step 5: Solve for x
    x = 17,179,241.29/5,287.05
  6. Step 6: Final answer
    x = 3,249.31

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.