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Finding the Fourth Proportional to 6,404.48, 8,838.14 and 3,571.88

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Solution

The fourth proportional to 6,404.48, 8,838.14 and 3,571.88 is: 4,929.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,404.48 : 8,838.14 = 3,571.88 : x
  2. Step 2: Convert to fraction form
    6,404.48/8,838.14 = 3,571.88/x
  3. Step 3: Cross multiply
    6,404.48x = 8,838.14 × 3,571.88
  4. Step 4: Simplify right side
    6,404.48x = 31,568,775.50
  5. Step 5: Solve for x
    x = 31,568,775.50/6,404.48
  6. Step 6: Final answer
    x = 4,929.17

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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.