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Finding the Fourth Proportional to 7,243.50, 9,996.04 and 3,931.50

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Solution

The fourth proportional to 7,243.50, 9,996.04 and 3,931.50 is: 5,425.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,243.50 : 9,996.04 = 3,931.50 : x
  2. Step 2: Convert to fraction form
    7,243.50/9,996.04 = 3,931.50/x
  3. Step 3: Cross multiply
    7,243.50x = 9,996.04 × 3,931.50
  4. Step 4: Simplify right side
    7,243.50x = 39,299,431.26
  5. Step 5: Solve for x
    x = 39,299,431.26/7,243.50
  6. Step 6: Final answer
    x = 5,425.48

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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.