Home / 8,181.80-12,272.70-6,108.20

Finding the Fourth Proportional to 8,181.80, 12,272.70 and 6,108.20

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Solution

The fourth proportional to 8,181.80, 12,272.70 and 6,108.20 is: 9,162.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,181.80 : 12,272.70 = 6,108.20 : x
  2. Step 2: Convert to fraction form
    8,181.80/12,272.70 = 6,108.20/x
  3. Step 3: Cross multiply
    8,181.80x = 12,272.70 × 6,108.20
  4. Step 4: Simplify right side
    8,181.80x = 74,964,106.14
  5. Step 5: Solve for x
    x = 74,964,106.14/8,181.80
  6. Step 6: Final answer
    x = 9,162.30

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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.