Home / 8,080.62-12,121.40-2,157.36

Finding the Fourth Proportional to 8,080.62, 12,121.40 and 2,157.36

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Solution

The fourth proportional to 8,080.62, 12,121.40 and 2,157.36 is: 3,236.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,080.62 : 12,121.40 = 2,157.36 : x
  2. Step 2: Convert to fraction form
    8,080.62/12,121.40 = 2,157.36/x
  3. Step 3: Cross multiply
    8,080.62x = 12,121.40 × 2,157.36
  4. Step 4: Simplify right side
    8,080.62x = 26,150,223.50
  5. Step 5: Solve for x
    x = 26,150,223.50/8,080.62
  6. Step 6: Final answer
    x = 3,236.17

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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.