Home / 6,499.05-9,749.40-2,115.01

Finding the Fourth Proportional to 6,499.05, 9,749.40 and 2,115.01

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Solution

The fourth proportional to 6,499.05, 9,749.40 and 2,115.01 is: 3,172.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,499.05 : 9,749.40 = 2,115.01 : x
  2. Step 2: Convert to fraction form
    6,499.05/9,749.40 = 2,115.01/x
  3. Step 3: Cross multiply
    6,499.05x = 9,749.40 × 2,115.01
  4. Step 4: Simplify right side
    6,499.05x = 20,620,078.49
  5. Step 5: Solve for x
    x = 20,620,078.49/6,499.05
  6. Step 6: Final answer
    x = 3,172.78

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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.