Home / 5,461.78-8,189.19-2,540.98

Finding the Fourth Proportional to 5,461.78, 8,189.19 and 2,540.98

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Solution

The fourth proportional to 5,461.78, 8,189.19 and 2,540.98 is: 3,809.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,461.78 : 8,189.19 = 2,540.98 : x
  2. Step 2: Convert to fraction form
    5,461.78/8,189.19 = 2,540.98/x
  3. Step 3: Cross multiply
    5,461.78x = 8,189.19 × 2,540.98
  4. Step 4: Simplify right side
    5,461.78x = 20,808,568.01
  5. Step 5: Solve for x
    x = 20,808,568.01/5,461.78
  6. Step 6: Final answer
    x = 3,809.85

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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.