Home / 3,206.42-4,815.12-1,981.10

Finding the Fourth Proportional to 3,206.42, 4,815.12 and 1,981.10

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Solution

The fourth proportional to 3,206.42, 4,815.12 and 1,981.10 is: 2,975.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,206.42 : 4,815.12 = 1,981.10 : x
  2. Step 2: Convert to fraction form
    3,206.42/4,815.12 = 1,981.10/x
  3. Step 3: Cross multiply
    3,206.42x = 4,815.12 × 1,981.10
  4. Step 4: Simplify right side
    3,206.42x = 9,539,234.23
  5. Step 5: Solve for x
    x = 9,539,234.23/3,206.42
  6. Step 6: Final answer
    x = 2,975.04

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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.