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Finding the Fourth Proportional to 5,297.77, 7,311.09 and 2,940.09

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Solution

The fourth proportional to 5,297.77, 7,311.09 and 2,940.09 is: 4,057.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,297.77 : 7,311.09 = 2,940.09 : x
  2. Step 2: Convert to fraction form
    5,297.77/7,311.09 = 2,940.09/x
  3. Step 3: Cross multiply
    5,297.77x = 7,311.09 × 2,940.09
  4. Step 4: Simplify right side
    5,297.77x = 21,495,262.60
  5. Step 5: Solve for x
    x = 21,495,262.60/5,297.77
  6. Step 6: Final answer
    x = 4,057.42

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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.