Home / 2,811.36-3,880.77-2,516.12

Finding the Fourth Proportional to 2,811.36, 3,880.77 and 2,516.12

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Solution

The fourth proportional to 2,811.36, 3,880.77 and 2,516.12 is: 3,473.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,811.36 : 3,880.77 = 2,516.12 : x
  2. Step 2: Convert to fraction form
    2,811.36/3,880.77 = 2,516.12/x
  3. Step 3: Cross multiply
    2,811.36x = 3,880.77 × 2,516.12
  4. Step 4: Simplify right side
    2,811.36x = 9,764,483.01
  5. Step 5: Solve for x
    x = 9,764,483.01/2,811.36
  6. Step 6: Final answer
    x = 3,473.22

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.