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Finding the Fourth Proportional to 9,371.72, 12,939.06 and 6,015.80

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Solution

The fourth proportional to 9,371.72, 12,939.06 and 6,015.80 is: 8,305.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,371.72 : 12,939.06 = 6,015.80 : x
  2. Step 2: Convert to fraction form
    9,371.72/12,939.06 = 6,015.80/x
  3. Step 3: Cross multiply
    9,371.72x = 12,939.06 × 6,015.80
  4. Step 4: Simplify right side
    9,371.72x = 77,838,797.15
  5. Step 5: Solve for x
    x = 77,838,797.15/9,371.72
  6. Step 6: Final answer
    x = 8,305.71

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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.