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Finding the Fourth Proportional to 8,939.16, 13,405.62 and 3,094.20

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Solution

The fourth proportional to 8,939.16, 13,405.62 and 3,094.20 is: 4,640.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,939.16 : 13,405.62 = 3,094.20 : x
  2. Step 2: Convert to fraction form
    8,939.16/13,405.62 = 3,094.20/x
  3. Step 3: Cross multiply
    8,939.16x = 13,405.62 × 3,094.20
  4. Step 4: Simplify right side
    8,939.16x = 41,479,669.40
  5. Step 5: Solve for x
    x = 41,479,669.40/8,939.16
  6. Step 6: Final answer
    x = 4,640.22

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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.