Home / 6,403.20-9,610.20-3,119.10

Finding the Fourth Proportional to 6,403.20, 9,610.20 and 3,119.10

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Solution

The fourth proportional to 6,403.20, 9,610.20 and 3,119.10 is: 4,681.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,403.20 : 9,610.20 = 3,119.10 : x
  2. Step 2: Convert to fraction form
    6,403.20/9,610.20 = 3,119.10/x
  3. Step 3: Cross multiply
    6,403.20x = 9,610.20 × 3,119.10
  4. Step 4: Simplify right side
    6,403.20x = 29,975,174.82
  5. Step 5: Solve for x
    x = 29,975,174.82/6,403.20
  6. Step 6: Final answer
    x = 4,681.28

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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.