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Finding the Fourth Proportional to 6,729.57, 9,287.11 and 3,897.07

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Solution

The fourth proportional to 6,729.57, 9,287.11 and 3,897.07 is: 5,378.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,729.57 : 9,287.11 = 3,897.07 : x
  2. Step 2: Convert to fraction form
    6,729.57/9,287.11 = 3,897.07/x
  3. Step 3: Cross multiply
    6,729.57x = 9,287.11 × 3,897.07
  4. Step 4: Simplify right side
    6,729.57x = 36,192,484.81
  5. Step 5: Solve for x
    x = 36,192,484.81/6,729.57
  6. Step 6: Final answer
    x = 5,378.13

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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.