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Finding the Fourth Proportional to 8,429.99, 11,604.80 and 7,244.15

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Solution

The fourth proportional to 8,429.99, 11,604.80 and 7,244.15 is: 9,972.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,429.99 : 11,604.80 = 7,244.15 : x
  2. Step 2: Convert to fraction form
    8,429.99/11,604.80 = 7,244.15/x
  3. Step 3: Cross multiply
    8,429.99x = 11,604.80 × 7,244.15
  4. Step 4: Simplify right side
    8,429.99x = 84,066,872.01
  5. Step 5: Solve for x
    x = 84,066,872.01/8,429.99
  6. Step 6: Final answer
    x = 9,972.36

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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.