Home / 2,813.59-4,218.63-1,081.81

Finding the Fourth Proportional to 2,813.59, 4,218.63 and 1,081.81

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Solution

The fourth proportional to 2,813.59, 4,218.63 and 1,081.81 is: 1,622.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,813.59 : 4,218.63 = 1,081.81 : x
  2. Step 2: Convert to fraction form
    2,813.59/4,218.63 = 1,081.81/x
  3. Step 3: Cross multiply
    2,813.59x = 4,218.63 × 1,081.81
  4. Step 4: Simplify right side
    2,813.59x = 4,563,756.12
  5. Step 5: Solve for x
    x = 4,563,756.12/2,813.59
  6. Step 6: Final answer
    x = 1,622.04

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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.