Home / 6,442.75-9,665.34-2,980

Finding the Fourth Proportional to 6,442.75, 9,665.34 and 2,980

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Solution

The fourth proportional to 6,442.75, 9,665.34 and 2,980 is: 4,470.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,442.75 : 9,665.34 = 2,980 : x
  2. Step 2: Convert to fraction form
    6,442.75/9,665.34 = 2,980/x
  3. Step 3: Cross multiply
    6,442.75x = 9,665.34 × 2,980
  4. Step 4: Simplify right side
    6,442.75x = 28,802,713.20
  5. Step 5: Solve for x
    x = 28,802,713.20/6,442.75
  6. Step 6: Final answer
    x = 4,470.56

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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.