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Finding the Fourth Proportional to 7,934.09, 11,901.04 and 2,387.21

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Solution

The fourth proportional to 7,934.09, 11,901.04 and 2,387.21 is: 3,580.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,934.09 : 11,901.04 = 2,387.21 : x
  2. Step 2: Convert to fraction form
    7,934.09/11,901.04 = 2,387.21/x
  3. Step 3: Cross multiply
    7,934.09x = 11,901.04 × 2,387.21
  4. Step 4: Simplify right side
    7,934.09x = 28,410,305.48
  5. Step 5: Solve for x
    x = 28,410,305.48/7,934.09
  6. Step 6: Final answer
    x = 3,580.79

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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.