Home / 8,921.08-13,381.10-2,680.96

Finding the Fourth Proportional to 8,921.08, 13,381.10 and 2,680.96

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Solution

The fourth proportional to 8,921.08, 13,381.10 and 2,680.96 is: 4,021.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,921.08 : 13,381.10 = 2,680.96 : x
  2. Step 2: Convert to fraction form
    8,921.08/13,381.10 = 2,680.96/x
  3. Step 3: Cross multiply
    8,921.08x = 13,381.10 × 2,680.96
  4. Step 4: Simplify right side
    8,921.08x = 35,874,193.86
  5. Step 5: Solve for x
    x = 35,874,193.86/8,921.08
  6. Step 6: Final answer
    x = 4,021.28

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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.