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Finding the Fourth Proportional to 6,411.88, 8,849.46 and 3,618.28

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Solution

The fourth proportional to 6,411.88, 8,849.46 and 3,618.28 is: 4,993.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,411.88 : 8,849.46 = 3,618.28 : x
  2. Step 2: Convert to fraction form
    6,411.88/8,849.46 = 3,618.28/x
  3. Step 3: Cross multiply
    6,411.88x = 8,849.46 × 3,618.28
  4. Step 4: Simplify right side
    6,411.88x = 32,019,824.13
  5. Step 5: Solve for x
    x = 32,019,824.13/6,411.88
  6. Step 6: Final answer
    x = 4,993.83

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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.