Home / 2,072.28-3,109.64-1,486.65

Finding the Fourth Proportional to 2,072.28, 3,109.64 and 1,486.65

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Solution

The fourth proportional to 2,072.28, 3,109.64 and 1,486.65 is: 2,230.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,072.28 : 3,109.64 = 1,486.65 : x
  2. Step 2: Convert to fraction form
    2,072.28/3,109.64 = 1,486.65/x
  3. Step 3: Cross multiply
    2,072.28x = 3,109.64 × 1,486.65
  4. Step 4: Simplify right side
    2,072.28x = 4,622,946.31
  5. Step 5: Solve for x
    x = 4,622,946.31/2,072.28
  6. Step 6: Final answer
    x = 2,230.85

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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.