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Finding the Fourth Proportional to 5,772.56, 8,656.28 and 2,122

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Solution

The fourth proportional to 5,772.56, 8,656.28 and 2,122 is: 3,182.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,772.56 : 8,656.28 = 2,122 : x
  2. Step 2: Convert to fraction form
    5,772.56/8,656.28 = 2,122/x
  3. Step 3: Cross multiply
    5,772.56x = 8,656.28 × 2,122
  4. Step 4: Simplify right side
    5,772.56x = 18,368,626.16
  5. Step 5: Solve for x
    x = 18,368,626.16/5,772.56
  6. Step 6: Final answer
    x = 3,182.06

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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.