Home / 6,431.28-9,647.60-2,047.71

Finding the Fourth Proportional to 6,431.28, 9,647.60 and 2,047.71

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Solution

The fourth proportional to 6,431.28, 9,647.60 and 2,047.71 is: 3,071.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,431.28 : 9,647.60 = 2,047.71 : x
  2. Step 2: Convert to fraction form
    6,431.28/9,647.60 = 2,047.71/x
  3. Step 3: Cross multiply
    6,431.28x = 9,647.60 × 2,047.71
  4. Step 4: Simplify right side
    6,431.28x = 19,755,487.00
  5. Step 5: Solve for x
    x = 19,755,487.00/6,431.28
  6. Step 6: Final answer
    x = 3,071.78

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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.