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Finding the Fourth Proportional to 6,605.65, 9,115.44 and 3,621.43

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Solution

The fourth proportional to 6,605.65, 9,115.44 and 3,621.43 is: 4,997.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,605.65 : 9,115.44 = 3,621.43 : x
  2. Step 2: Convert to fraction form
    6,605.65/9,115.44 = 3,621.43/x
  3. Step 3: Cross multiply
    6,605.65x = 9,115.44 × 3,621.43
  4. Step 4: Simplify right side
    6,605.65x = 33,010,927.88
  5. Step 5: Solve for x
    x = 33,010,927.88/6,605.65
  6. Step 6: Final answer
    x = 4,997.38

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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.