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Finding the Fourth Proportional to 7,134.52, 9,846.12 and 3,990.73

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Solution

The fourth proportional to 7,134.52, 9,846.12 and 3,990.73 is: 5,507.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,134.52 : 9,846.12 = 3,990.73 : x
  2. Step 2: Convert to fraction form
    7,134.52/9,846.12 = 3,990.73/x
  3. Step 3: Cross multiply
    7,134.52x = 9,846.12 × 3,990.73
  4. Step 4: Simplify right side
    7,134.52x = 39,293,206.47
  5. Step 5: Solve for x
    x = 39,293,206.47/7,134.52
  6. Step 6: Final answer
    x = 5,507.48

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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.