Home / 5,287.31-7,292.40-3,399.09

Finding the Fourth Proportional to 5,287.31, 7,292.40 and 3,399.09

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Solution

The fourth proportional to 5,287.31, 7,292.40 and 3,399.09 is: 4,688.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,287.31 : 7,292.40 = 3,399.09 : x
  2. Step 2: Convert to fraction form
    5,287.31/7,292.40 = 3,399.09/x
  3. Step 3: Cross multiply
    5,287.31x = 7,292.40 × 3,399.09
  4. Step 4: Simplify right side
    5,287.31x = 24,787,487.45
  5. Step 5: Solve for x
    x = 24,787,487.45/5,287.31
  6. Step 6: Final answer
    x = 4,688.11

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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.