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Finding the Fourth Proportional to 8,939.15, 12,335.98 and 4,960.25

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Solution

The fourth proportional to 8,939.15, 12,335.98 and 4,960.25 is: 6,845.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,939.15 : 12,335.98 = 4,960.25 : x
  2. Step 2: Convert to fraction form
    8,939.15/12,335.98 = 4,960.25/x
  3. Step 3: Cross multiply
    8,939.15x = 12,335.98 × 4,960.25
  4. Step 4: Simplify right side
    8,939.15x = 61,189,544.80
  5. Step 5: Solve for x
    x = 61,189,544.80/8,939.15
  6. Step 6: Final answer
    x = 6,845.12

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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.