Home / 2,811.66-3,880.35-1,633.11

Finding the Fourth Proportional to 2,811.66, 3,880.35 and 1,633.11

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Solution

The fourth proportional to 2,811.66, 3,880.35 and 1,633.11 is: 2,253.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,811.66 : 3,880.35 = 1,633.11 : x
  2. Step 2: Convert to fraction form
    2,811.66/3,880.35 = 1,633.11/x
  3. Step 3: Cross multiply
    2,811.66x = 3,880.35 × 1,633.11
  4. Step 4: Simplify right side
    2,811.66x = 6,337,038.39
  5. Step 5: Solve for x
    x = 6,337,038.39/2,811.66
  6. Step 6: Final answer
    x = 2,253.84

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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.