Home / 2,812.40-4,218.64-1,351.22

Finding the Fourth Proportional to 2,812.40, 4,218.64 and 1,351.22

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Solution

The fourth proportional to 2,812.40, 4,218.64 and 1,351.22 is: 2,026.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,812.40 : 4,218.64 = 1,351.22 : x
  2. Step 2: Convert to fraction form
    2,812.40/4,218.64 = 1,351.22/x
  3. Step 3: Cross multiply
    2,812.40x = 4,218.64 × 1,351.22
  4. Step 4: Simplify right side
    2,812.40x = 5,700,286.27
  5. Step 5: Solve for x
    x = 5,700,286.27/2,812.40
  6. Step 6: Final answer
    x = 2,026.84

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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.