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Finding the Fourth Proportional to 5,297.80, 7,311.54 and 3,203.08

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Solution

The fourth proportional to 5,297.80, 7,311.54 and 3,203.08 is: 4,420.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,297.80 : 7,311.54 = 3,203.08 : x
  2. Step 2: Convert to fraction form
    5,297.80/7,311.54 = 3,203.08/x
  3. Step 3: Cross multiply
    5,297.80x = 7,311.54 × 3,203.08
  4. Step 4: Simplify right side
    5,297.80x = 23,419,447.54
  5. Step 5: Solve for x
    x = 23,419,447.54/5,297.80
  6. Step 6: Final answer
    x = 4,420.60

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.