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Finding the Fourth Proportional to 6,441.99, 8,889.87 and 3,609.39

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Solution

The fourth proportional to 6,441.99, 8,889.87 and 3,609.39 is: 4,980.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,441.99 : 8,889.87 = 3,609.39 : x
  2. Step 2: Convert to fraction form
    6,441.99/8,889.87 = 3,609.39/x
  3. Step 3: Cross multiply
    6,441.99x = 8,889.87 × 3,609.39
  4. Step 4: Simplify right side
    6,441.99x = 32,087,007.88
  5. Step 5: Solve for x
    x = 32,087,007.88/6,441.99
  6. Step 6: Final answer
    x = 4,980.92

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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.