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Finding the Fourth Proportional to 9,781.08, 14,672.16 and 3,936.93

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Solution

The fourth proportional to 9,781.08, 14,672.16 and 3,936.93 is: 5,905.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,781.08 : 14,672.16 = 3,936.93 : x
  2. Step 2: Convert to fraction form
    9,781.08/14,672.16 = 3,936.93/x
  3. Step 3: Cross multiply
    9,781.08x = 14,672.16 × 3,936.93
  4. Step 4: Simplify right side
    9,781.08x = 57,763,266.87
  5. Step 5: Solve for x
    x = 57,763,266.87/9,781.08
  6. Step 6: Final answer
    x = 5,905.61

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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.