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Finding the Fourth Proportional to 3,340.65, 5,011.01 and 1,491.86

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Solution

The fourth proportional to 3,340.65, 5,011.01 and 1,491.86 is: 2,237.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,340.65 : 5,011.01 = 1,491.86 : x
  2. Step 2: Convert to fraction form
    3,340.65/5,011.01 = 1,491.86/x
  3. Step 3: Cross multiply
    3,340.65x = 5,011.01 × 1,491.86
  4. Step 4: Simplify right side
    3,340.65x = 7,475,692.86
  5. Step 5: Solve for x
    x = 7,475,692.86/3,340.65
  6. Step 6: Final answer
    x = 2,237.80

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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.