Home / 5,201.28-7,806.60-2,605.68

Finding the Fourth Proportional to 5,201.28, 7,806.60 and 2,605.68

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Solution

The fourth proportional to 5,201.28, 7,806.60 and 2,605.68 is: 3,910.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,201.28 : 7,806.60 = 2,605.68 : x
  2. Step 2: Convert to fraction form
    5,201.28/7,806.60 = 2,605.68/x
  3. Step 3: Cross multiply
    5,201.28x = 7,806.60 × 2,605.68
  4. Step 4: Simplify right side
    5,201.28x = 20,341,501.49
  5. Step 5: Solve for x
    x = 20,341,501.49/5,201.28
  6. Step 6: Final answer
    x = 3,910.86

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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.