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Finding the Fourth Proportional to 6,339.07, 9,510 and 2,178.97

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Solution

The fourth proportional to 6,339.07, 9,510 and 2,178.97 is: 3,268.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,339.07 : 9,510 = 2,178.97 : x
  2. Step 2: Convert to fraction form
    6,339.07/9,510 = 2,178.97/x
  3. Step 3: Cross multiply
    6,339.07x = 9,510 × 2,178.97
  4. Step 4: Simplify right side
    6,339.07x = 20,722,004.70
  5. Step 5: Solve for x
    x = 20,722,004.70/6,339.07
  6. Step 6: Final answer
    x = 3,268.93

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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.