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Finding the Fourth Proportional to 5,330.66, 7,993.20 and 2,555.60

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Solution

The fourth proportional to 5,330.66, 7,993.20 and 2,555.60 is: 3,832.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,330.66 : 7,993.20 = 2,555.60 : x
  2. Step 2: Convert to fraction form
    5,330.66/7,993.20 = 2,555.60/x
  3. Step 3: Cross multiply
    5,330.66x = 7,993.20 × 2,555.60
  4. Step 4: Simplify right side
    5,330.66x = 20,427,421.92
  5. Step 5: Solve for x
    x = 20,427,421.92/5,330.66
  6. Step 6: Final answer
    x = 3,832.06

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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.