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Finding the Fourth Proportional to 3,609.40, 5,410.86 and 1,879.24

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Solution

The fourth proportional to 3,609.40, 5,410.86 and 1,879.24 is: 2,817.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,609.40 : 5,410.86 = 1,879.24 : x
  2. Step 2: Convert to fraction form
    3,609.40/5,410.86 = 1,879.24/x
  3. Step 3: Cross multiply
    3,609.40x = 5,410.86 × 1,879.24
  4. Step 4: Simplify right side
    3,609.40x = 10,168,304.55
  5. Step 5: Solve for x
    x = 10,168,304.55/3,609.40
  6. Step 6: Final answer
    x = 2,817.17

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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.