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Finding the Fourth Proportional to 3,340.92, 5,012.94 and 1,491.85

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Solution

The fourth proportional to 3,340.92, 5,012.94 and 1,491.85 is: 2,238.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,340.92 : 5,012.94 = 1,491.85 : x
  2. Step 2: Convert to fraction form
    3,340.92/5,012.94 = 1,491.85/x
  3. Step 3: Cross multiply
    3,340.92x = 5,012.94 × 1,491.85
  4. Step 4: Simplify right side
    3,340.92x = 7,478,554.54
  5. Step 5: Solve for x
    x = 7,478,554.54/3,340.92
  6. Step 6: Final answer
    x = 2,238.47

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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.