Home / 2,811.53-4,216.07-2,162.72

Finding the Fourth Proportional to 2,811.53, 4,216.07 and 2,162.72

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Solution

The fourth proportional to 2,811.53, 4,216.07 and 2,162.72 is: 3,243.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,811.53 : 4,216.07 = 2,162.72 : x
  2. Step 2: Convert to fraction form
    2,811.53/4,216.07 = 2,162.72/x
  3. Step 3: Cross multiply
    2,811.53x = 4,216.07 × 2,162.72
  4. Step 4: Simplify right side
    2,811.53x = 9,118,147.02
  5. Step 5: Solve for x
    x = 9,118,147.02/2,811.53
  6. Step 6: Final answer
    x = 3,243.13

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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.