Home / 1,812.41-2,719.39-1,228.07

Finding the Fourth Proportional to 1,812.41, 2,719.39 and 1,228.07

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Solution

The fourth proportional to 1,812.41, 2,719.39 and 1,228.07 is: 1,842.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,812.41 : 2,719.39 = 1,228.07 : x
  2. Step 2: Convert to fraction form
    1,812.41/2,719.39 = 1,228.07/x
  3. Step 3: Cross multiply
    1,812.41x = 2,719.39 × 1,228.07
  4. Step 4: Simplify right side
    1,812.41x = 3,339,601.28
  5. Step 5: Solve for x
    x = 3,339,601.28/1,812.41
  6. Step 6: Final answer
    x = 1,842.63

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1.5x scale

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.