Home / 8,121.07-12,176.70-3,184.81

Finding the Fourth Proportional to 8,121.07, 12,176.70 and 3,184.81

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Solution

The fourth proportional to 8,121.07, 12,176.70 and 3,184.81 is: 4,775.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,121.07 : 12,176.70 = 3,184.81 : x
  2. Step 2: Convert to fraction form
    8,121.07/12,176.70 = 3,184.81/x
  3. Step 3: Cross multiply
    8,121.07x = 12,176.70 × 3,184.81
  4. Step 4: Simplify right side
    8,121.07x = 38,780,475.93
  5. Step 5: Solve for x
    x = 38,780,475.93/8,121.07
  6. Step 6: Final answer
    x = 4,775.29

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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.