Home / 5,657.01-7,806.55-3,139.09

Finding the Fourth Proportional to 5,657.01, 7,806.55 and 3,139.09

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Solution

The fourth proportional to 5,657.01, 7,806.55 and 3,139.09 is: 4,331.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,657.01 : 7,806.55 = 3,139.09 : x
  2. Step 2: Convert to fraction form
    5,657.01/7,806.55 = 3,139.09/x
  3. Step 3: Cross multiply
    5,657.01x = 7,806.55 × 3,139.09
  4. Step 4: Simplify right side
    5,657.01x = 24,505,435.68
  5. Step 5: Solve for x
    x = 24,505,435.68/5,657.01
  6. Step 6: Final answer
    x = 4,331.87

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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.