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Finding the Fourth Proportional to 3,687.96, 5,089.38 and 2,009.40

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Solution

The fourth proportional to 3,687.96, 5,089.38 and 2,009.40 is: 2,772.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,687.96 : 5,089.38 = 2,009.40 : x
  2. Step 2: Convert to fraction form
    3,687.96/5,089.38 = 2,009.40/x
  3. Step 3: Cross multiply
    3,687.96x = 5,089.38 × 2,009.40
  4. Step 4: Simplify right side
    3,687.96x = 10,226,600.17
  5. Step 5: Solve for x
    x = 10,226,600.17/3,687.96
  6. Step 6: Final answer
    x = 2,772.97

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1.5x scale

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.