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Finding the Fourth Proportional to 3,654.65, 5,474.07 and 1,919.63

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Solution

The fourth proportional to 3,654.65, 5,474.07 and 1,919.63 is: 2,875.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,654.65 : 5,474.07 = 1,919.63 : x
  2. Step 2: Convert to fraction form
    3,654.65/5,474.07 = 1,919.63/x
  3. Step 3: Cross multiply
    3,654.65x = 5,474.07 × 1,919.63
  4. Step 4: Simplify right side
    3,654.65x = 10,508,161.62
  5. Step 5: Solve for x
    x = 10,508,161.62/3,654.65
  6. Step 6: Final answer
    x = 2,875.29

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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.