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Finding the Fourth Proportional to 5,297.12, 7,310.16 and 2,939.30

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Solution

The fourth proportional to 5,297.12, 7,310.16 and 2,939.30 is: 4,056.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,297.12 : 7,310.16 = 2,939.30 : x
  2. Step 2: Convert to fraction form
    5,297.12/7,310.16 = 2,939.30/x
  3. Step 3: Cross multiply
    5,297.12x = 7,310.16 × 2,939.30
  4. Step 4: Simplify right side
    5,297.12x = 21,486,753.29
  5. Step 5: Solve for x
    x = 21,486,753.29/5,297.12
  6. Step 6: Final answer
    x = 4,056.31

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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.