Home / 8,079.06-12,121.62-2,814.46

Finding the Fourth Proportional to 8,079.06, 12,121.62 and 2,814.46

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Solution

The fourth proportional to 8,079.06, 12,121.62 and 2,814.46 is: 4,222.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,079.06 : 12,121.62 = 2,814.46 : x
  2. Step 2: Convert to fraction form
    8,079.06/12,121.62 = 2,814.46/x
  3. Step 3: Cross multiply
    8,079.06x = 12,121.62 × 2,814.46
  4. Step 4: Simplify right side
    8,079.06x = 34,115,814.63
  5. Step 5: Solve for x
    x = 34,115,814.63/8,079.06
  6. Step 6: Final answer
    x = 4,222.75

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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.