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Finding the Fourth Proportional to 7,243.26, 9,995.68 and 3,931.26

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Solution

The fourth proportional to 7,243.26, 9,995.68 and 3,931.26 is: 5,425.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,243.26 : 9,995.68 = 3,931.26 : x
  2. Step 2: Convert to fraction form
    7,243.26/9,995.68 = 3,931.26/x
  3. Step 3: Cross multiply
    7,243.26x = 9,995.68 × 3,931.26
  4. Step 4: Simplify right side
    7,243.26x = 39,295,616.96
  5. Step 5: Solve for x
    x = 39,295,616.96/7,243.26
  6. Step 6: Final answer
    x = 5,425.13

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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.