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Finding the Fourth Proportional to 6,389.64, 9,593.52 and 3,621.75

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Solution

The fourth proportional to 6,389.64, 9,593.52 and 3,621.75 is: 5,437.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,389.64 : 9,593.52 = 3,621.75 : x
  2. Step 2: Convert to fraction form
    6,389.64/9,593.52 = 3,621.75/x
  3. Step 3: Cross multiply
    6,389.64x = 9,593.52 × 3,621.75
  4. Step 4: Simplify right side
    6,389.64x = 34,745,331.06
  5. Step 5: Solve for x
    x = 34,745,331.06/6,389.64
  6. Step 6: Final answer
    x = 5,437.76

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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.