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Finding the Fourth Proportional to 8,079.57, 12,119.19 and 4,405.19

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Solution

The fourth proportional to 8,079.57, 12,119.19 and 4,405.19 is: 6,607.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,079.57 : 12,119.19 = 4,405.19 : x
  2. Step 2: Convert to fraction form
    8,079.57/12,119.19 = 4,405.19/x
  3. Step 3: Cross multiply
    8,079.57x = 12,119.19 × 4,405.19
  4. Step 4: Simplify right side
    8,079.57x = 53,387,274.00
  5. Step 5: Solve for x
    x = 53,387,274.00/8,079.57
  6. Step 6: Final answer
    x = 6,607.69

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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.