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Finding the Fourth Proportional to 5,355.32, 7,389.90 and 2,997

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Solution

The fourth proportional to 5,355.32, 7,389.90 and 2,997 is: 4,135.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,355.32 : 7,389.90 = 2,997 : x
  2. Step 2: Convert to fraction form
    5,355.32/7,389.90 = 2,997/x
  3. Step 3: Cross multiply
    5,355.32x = 7,389.90 × 2,997
  4. Step 4: Simplify right side
    5,355.32x = 22,147,530.30
  5. Step 5: Solve for x
    x = 22,147,530.30/5,355.32
  6. Step 6: Final answer
    x = 4,135.62

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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.