Home / 2,811.20-4,216.80-2,264.45

Finding the Fourth Proportional to 2,811.20, 4,216.80 and 2,264.45

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Solution

The fourth proportional to 2,811.20, 4,216.80 and 2,264.45 is: 3,396.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,811.20 : 4,216.80 = 2,264.45 : x
  2. Step 2: Convert to fraction form
    2,811.20/4,216.80 = 2,264.45/x
  3. Step 3: Cross multiply
    2,811.20x = 4,216.80 × 2,264.45
  4. Step 4: Simplify right side
    2,811.20x = 9,548,732.76
  5. Step 5: Solve for x
    x = 9,548,732.76/2,811.20
  6. Step 6: Final answer
    x = 3,396.68

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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.