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Finding the Fourth Proportional to 3,842.90, 5,765.26 and 1,651.65

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Solution

The fourth proportional to 3,842.90, 5,765.26 and 1,651.65 is: 2,477.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,842.90 : 5,765.26 = 1,651.65 : x
  2. Step 2: Convert to fraction form
    3,842.90/5,765.26 = 1,651.65/x
  3. Step 3: Cross multiply
    3,842.90x = 5,765.26 × 1,651.65
  4. Step 4: Simplify right side
    3,842.90x = 9,522,191.68
  5. Step 5: Solve for x
    x = 9,522,191.68/3,842.90
  6. Step 6: Final answer
    x = 2,477.87

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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.