Home / 3,081.06-4,621.05-1,230.78

Finding the Fourth Proportional to 3,081.06, 4,621.05 and 1,230.78

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Solution

The fourth proportional to 3,081.06, 4,621.05 and 1,230.78 is: 1,845.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,081.06 : 4,621.05 = 1,230.78 : x
  2. Step 2: Convert to fraction form
    3,081.06/4,621.05 = 1,230.78/x
  3. Step 3: Cross multiply
    3,081.06x = 4,621.05 × 1,230.78
  4. Step 4: Simplify right side
    3,081.06x = 5,687,495.92
  5. Step 5: Solve for x
    x = 5,687,495.92/3,081.06
  6. Step 6: Final answer
    x = 1,845.95

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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.