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Finding the Fourth Proportional to 6,639.93, 9,959.91 and 2,744.46

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Solution

The fourth proportional to 6,639.93, 9,959.91 and 2,744.46 is: 4,116.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,639.93 : 9,959.91 = 2,744.46 : x
  2. Step 2: Convert to fraction form
    6,639.93/9,959.91 = 2,744.46/x
  3. Step 3: Cross multiply
    6,639.93x = 9,959.91 × 2,744.46
  4. Step 4: Simplify right side
    6,639.93x = 27,334,574.60
  5. Step 5: Solve for x
    x = 27,334,574.60/6,639.93
  6. Step 6: Final answer
    x = 4,116.70

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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.