Home / 3,109.68-4,659.64-2,171.70

Finding the Fourth Proportional to 3,109.68, 4,659.64 and 2,171.70

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Solution

The fourth proportional to 3,109.68, 4,659.64 and 2,171.70 is: 3,254.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,109.68 : 4,659.64 = 2,171.70 : x
  2. Step 2: Convert to fraction form
    3,109.68/4,659.64 = 2,171.70/x
  3. Step 3: Cross multiply
    3,109.68x = 4,659.64 × 2,171.70
  4. Step 4: Simplify right side
    3,109.68x = 10,119,340.19
  5. Step 5: Solve for x
    x = 10,119,340.19/3,109.68
  6. Step 6: Final answer
    x = 3,254.14

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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.