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Finding the Fourth Proportional to 2,709.84, 3,739.31 and 1,530.68

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Solution

The fourth proportional to 2,709.84, 3,739.31 and 1,530.68 is: 2,112.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,709.84 : 3,739.31 = 1,530.68 : x
  2. Step 2: Convert to fraction form
    2,709.84/3,739.31 = 1,530.68/x
  3. Step 3: Cross multiply
    2,709.84x = 3,739.31 × 1,530.68
  4. Step 4: Simplify right side
    2,709.84x = 5,723,687.03
  5. Step 5: Solve for x
    x = 5,723,687.03/2,709.84
  6. Step 6: Final answer
    x = 2,112.19

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.