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Finding the Fourth Proportional to 6,763.68, 9,334.80 and 3,969.36

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Solution

The fourth proportional to 6,763.68, 9,334.80 and 3,969.36 is: 5,478.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,763.68 : 9,334.80 = 3,969.36 : x
  2. Step 2: Convert to fraction form
    6,763.68/9,334.80 = 3,969.36/x
  3. Step 3: Cross multiply
    6,763.68x = 9,334.80 × 3,969.36
  4. Step 4: Simplify right side
    6,763.68x = 37,053,181.73
  5. Step 5: Solve for x
    x = 37,053,181.73/6,763.68
  6. Step 6: Final answer
    x = 5,478.26

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.