Home / 3,120.43-4,679.28-1,659.25

Finding the Fourth Proportional to 3,120.43, 4,679.28 and 1,659.25

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Solution

The fourth proportional to 3,120.43, 4,679.28 and 1,659.25 is: 2,488.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,120.43 : 4,679.28 = 1,659.25 : x
  2. Step 2: Convert to fraction form
    3,120.43/4,679.28 = 1,659.25/x
  3. Step 3: Cross multiply
    3,120.43x = 4,679.28 × 1,659.25
  4. Step 4: Simplify right side
    3,120.43x = 7,764,095.34
  5. Step 5: Solve for x
    x = 7,764,095.34/3,120.43
  6. Step 6: Final answer
    x = 2,488.15

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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.