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Finding the Fourth Proportional to 6,729.36, 9,287.04 and 3,897.36

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Solution

The fourth proportional to 6,729.36, 9,287.04 and 3,897.36 is: 5,378.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,729.36 : 9,287.04 = 3,897.36 : x
  2. Step 2: Convert to fraction form
    6,729.36/9,287.04 = 3,897.36/x
  3. Step 3: Cross multiply
    6,729.36x = 9,287.04 × 3,897.36
  4. Step 4: Simplify right side
    6,729.36x = 36,194,938.21
  5. Step 5: Solve for x
    x = 36,194,938.21/6,729.36
  6. Step 6: Final answer
    x = 5,378.66

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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.