Home / 2,812.60-4,218.99-1,351.45

Finding the Fourth Proportional to 2,812.60, 4,218.99 and 1,351.45

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Solution

The fourth proportional to 2,812.60, 4,218.99 and 1,351.45 is: 2,027.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,812.60 : 4,218.99 = 1,351.45 : x
  2. Step 2: Convert to fraction form
    2,812.60/4,218.99 = 1,351.45/x
  3. Step 3: Cross multiply
    2,812.60x = 4,218.99 × 1,351.45
  4. Step 4: Simplify right side
    2,812.60x = 5,701,754.04
  5. Step 5: Solve for x
    x = 5,701,754.04/2,812.60
  6. Step 6: Final answer
    x = 2,027.22

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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.