Home / 6,390-9,583.40-2,229.39

Finding the Fourth Proportional to 6,390, 9,583.40 and 2,229.39

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Solution

The fourth proportional to 6,390, 9,583.40 and 2,229.39 is: 3,343.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,390 : 9,583.40 = 2,229.39 : x
  2. Step 2: Convert to fraction form
    6,390/9,583.40 = 2,229.39/x
  3. Step 3: Cross multiply
    6,390x = 9,583.40 × 2,229.39
  4. Step 4: Simplify right side
    6,390x = 21,365,141.70
  5. Step 5: Solve for x
    x = 21,365,141.70/6,390
  6. Step 6: Final answer
    x = 3,343.53

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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.