Home / 8,821.72-12,170.70-6,304.12

Finding the Fourth Proportional to 8,821.72, 12,170.70 and 6,304.12

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Solution

The fourth proportional to 8,821.72, 12,170.70 and 6,304.12 is: 8,697.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,821.72 : 12,170.70 = 6,304.12 : x
  2. Step 2: Convert to fraction form
    8,821.72/12,170.70 = 6,304.12/x
  3. Step 3: Cross multiply
    8,821.72x = 12,170.70 × 6,304.12
  4. Step 4: Simplify right side
    8,821.72x = 76,725,553.28
  5. Step 5: Solve for x
    x = 76,725,553.28/8,821.72
  6. Step 6: Final answer
    x = 8,697.35

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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.