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Finding the Fourth Proportional to 3,509.80, 5,262.26 and 1,659.88

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Solution

The fourth proportional to 3,509.80, 5,262.26 and 1,659.88 is: 2,488.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,509.80 : 5,262.26 = 1,659.88 : x
  2. Step 2: Convert to fraction form
    3,509.80/5,262.26 = 1,659.88/x
  3. Step 3: Cross multiply
    3,509.80x = 5,262.26 × 1,659.88
  4. Step 4: Simplify right side
    3,509.80x = 8,734,720.13
  5. Step 5: Solve for x
    x = 8,734,720.13/3,509.80
  6. Step 6: Final answer
    x = 2,488.67

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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.