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Finding the Fourth Proportional to 7,969.03, 11,930.45 and 7,124.81

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Solution

The fourth proportional to 7,969.03, 11,930.45 and 7,124.81 is: 10,666.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,969.03 : 11,930.45 = 7,124.81 : x
  2. Step 2: Convert to fraction form
    7,969.03/11,930.45 = 7,124.81/x
  3. Step 3: Cross multiply
    7,969.03x = 11,930.45 × 7,124.81
  4. Step 4: Simplify right side
    7,969.03x = 85,002,094.19
  5. Step 5: Solve for x
    x = 85,002,094.19/7,969.03
  6. Step 6: Final answer
    x = 10,666.56

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.