Home / 8,680.72-13,003.66-3,994.20

Finding the Fourth Proportional to 8,680.72, 13,003.66 and 3,994.20

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Solution

The fourth proportional to 8,680.72, 13,003.66 and 3,994.20 is: 5,983.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,680.72 : 13,003.66 = 3,994.20 : x
  2. Step 2: Convert to fraction form
    8,680.72/13,003.66 = 3,994.20/x
  3. Step 3: Cross multiply
    8,680.72x = 13,003.66 × 3,994.20
  4. Step 4: Simplify right side
    8,680.72x = 51,939,133.78
  5. Step 5: Solve for x
    x = 51,939,133.78/8,680.72
  6. Step 6: Final answer
    x = 5,983.27

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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.