Home / 2,811.87-4,219.04-1,081.71

Finding the Fourth Proportional to 2,811.87, 4,219.04 and 1,081.71

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Solution

The fourth proportional to 2,811.87, 4,219.04 and 1,081.71 is: 1,623.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,811.87 : 4,219.04 = 1,081.71 : x
  2. Step 2: Convert to fraction form
    2,811.87/4,219.04 = 1,081.71/x
  3. Step 3: Cross multiply
    2,811.87x = 4,219.04 × 1,081.71
  4. Step 4: Simplify right side
    2,811.87x = 4,563,777.76
  5. Step 5: Solve for x
    x = 4,563,777.76/2,811.87
  6. Step 6: Final answer
    x = 1,623.04

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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.