Home / 2,811.02-4,216.53-2,672.78

Finding the Fourth Proportional to 2,811.02, 4,216.53 and 2,672.78

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Solution

The fourth proportional to 2,811.02, 4,216.53 and 2,672.78 is: 4,009.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,811.02 : 4,216.53 = 2,672.78 : x
  2. Step 2: Convert to fraction form
    2,811.02/4,216.53 = 2,672.78/x
  3. Step 3: Cross multiply
    2,811.02x = 4,216.53 × 2,672.78
  4. Step 4: Simplify right side
    2,811.02x = 11,269,857.05
  5. Step 5: Solve for x
    x = 11,269,857.05/2,811.02
  6. Step 6: Final answer
    x = 4,009.17

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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.