Home / 8,077.80-12,120.84-4,181.40

Finding the Fourth Proportional to 8,077.80, 12,120.84 and 4,181.40

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Solution

The fourth proportional to 8,077.80, 12,120.84 and 4,181.40 is: 6,274.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,077.80 : 12,120.84 = 4,181.40 : x
  2. Step 2: Convert to fraction form
    8,077.80/12,120.84 = 4,181.40/x
  3. Step 3: Cross multiply
    8,077.80x = 12,120.84 × 4,181.40
  4. Step 4: Simplify right side
    8,077.80x = 50,682,080.38
  5. Step 5: Solve for x
    x = 50,682,080.38/8,077.80
  6. Step 6: Final answer
    x = 6,274.24

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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.