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Finding the Fourth Proportional to 6,964.80, 10,447.20 and 4,048.80

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Solution

The fourth proportional to 6,964.80, 10,447.20 and 4,048.80 is: 6,073.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,964.80 : 10,447.20 = 4,048.80 : x
  2. Step 2: Convert to fraction form
    6,964.80/10,447.20 = 4,048.80/x
  3. Step 3: Cross multiply
    6,964.80x = 10,447.20 × 4,048.80
  4. Step 4: Simplify right side
    6,964.80x = 42,298,623.36
  5. Step 5: Solve for x
    x = 42,298,623.36/6,964.80
  6. Step 6: Final answer
    x = 6,073.20

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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.