Home / 8,120.68-12,175.62-2,925.88

Finding the Fourth Proportional to 8,120.68, 12,175.62 and 2,925.88

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Solution

The fourth proportional to 8,120.68, 12,175.62 and 2,925.88 is: 4,386.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,120.68 : 12,175.62 = 2,925.88 : x
  2. Step 2: Convert to fraction form
    8,120.68/12,175.62 = 2,925.88/x
  3. Step 3: Cross multiply
    8,120.68x = 12,175.62 × 2,925.88
  4. Step 4: Simplify right side
    8,120.68x = 35,624,403.05
  5. Step 5: Solve for x
    x = 35,624,403.05/8,120.68
  6. Step 6: Final answer
    x = 4,386.87

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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.