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Finding the Fourth Proportional to 2,309.87, 3,473.13 and 2,129.47

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Solution

The fourth proportional to 2,309.87, 3,473.13 and 2,129.47 is: 3,201.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,309.87 : 3,473.13 = 2,129.47 : x
  2. Step 2: Convert to fraction form
    2,309.87/3,473.13 = 2,129.47/x
  3. Step 3: Cross multiply
    2,309.87x = 3,473.13 × 2,129.47
  4. Step 4: Simplify right side
    2,309.87x = 7,395,926.14
  5. Step 5: Solve for x
    x = 7,395,926.14/2,309.87
  6. Step 6: Final answer
    x = 3,201.88

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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.