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Finding the Fourth Proportional to 6,411.22, 8,847.45 and 3,578.43

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Solution

The fourth proportional to 6,411.22, 8,847.45 and 3,578.43 is: 4,938.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,411.22 : 8,847.45 = 3,578.43 : x
  2. Step 2: Convert to fraction form
    6,411.22/8,847.45 = 3,578.43/x
  3. Step 3: Cross multiply
    6,411.22x = 8,847.45 × 3,578.43
  4. Step 4: Simplify right side
    6,411.22x = 31,659,980.50
  5. Step 5: Solve for x
    x = 31,659,980.50/6,411.22
  6. Step 6: Final answer
    x = 4,938.22

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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.