Home / 3,946.12-5,919.18-1,172.78

Finding the Fourth Proportional to 3,946.12, 5,919.18 and 1,172.78

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Solution

The fourth proportional to 3,946.12, 5,919.18 and 1,172.78 is: 1,759.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,946.12 : 5,919.18 = 1,172.78 : x
  2. Step 2: Convert to fraction form
    3,946.12/5,919.18 = 1,172.78/x
  3. Step 3: Cross multiply
    3,946.12x = 5,919.18 × 1,172.78
  4. Step 4: Simplify right side
    3,946.12x = 6,941,884.12
  5. Step 5: Solve for x
    x = 6,941,884.12/3,946.12
  6. Step 6: Final answer
    x = 1,759.17

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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.