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Finding the Fourth Proportional to 6,759.36, 9,328.80 and 3,965.12

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Solution

The fourth proportional to 6,759.36, 9,328.80 and 3,965.12 is: 5,472.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,759.36 : 9,328.80 = 3,965.12 : x
  2. Step 2: Convert to fraction form
    6,759.36/9,328.80 = 3,965.12/x
  3. Step 3: Cross multiply
    6,759.36x = 9,328.80 × 3,965.12
  4. Step 4: Simplify right side
    6,759.36x = 36,989,811.46
  5. Step 5: Solve for x
    x = 36,989,811.46/6,759.36
  6. Step 6: Final answer
    x = 5,472.38

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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.