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Finding the Fourth Proportional to 6,960, 10,439.80 and 2,577.36

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Solution

The fourth proportional to 6,960, 10,439.80 and 2,577.36 is: 3,865.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,960 : 10,439.80 = 2,577.36 : x
  2. Step 2: Convert to fraction form
    6,960/10,439.80 = 2,577.36/x
  3. Step 3: Cross multiply
    6,960x = 10,439.80 × 2,577.36
  4. Step 4: Simplify right side
    6,960x = 26,907,116.48
  5. Step 5: Solve for x
    x = 26,907,116.48/6,960
  6. Step 6: Final answer
    x = 3,865.97

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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.