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Finding the Fourth Proportional to 5,853.64, 8,781.04 and 2,155.01

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Solution

The fourth proportional to 5,853.64, 8,781.04 and 2,155.01 is: 3,232.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,853.64 : 8,781.04 = 2,155.01 : x
  2. Step 2: Convert to fraction form
    5,853.64/8,781.04 = 2,155.01/x
  3. Step 3: Cross multiply
    5,853.64x = 8,781.04 × 2,155.01
  4. Step 4: Simplify right side
    5,853.64x = 18,923,198.85
  5. Step 5: Solve for x
    x = 18,923,198.85/5,853.64
  6. Step 6: Final answer
    x = 3,232.72

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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.