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Finding the Fourth Proportional to 8,392.05, 11,578.15 and 5,204.20

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Solution

The fourth proportional to 8,392.05, 11,578.15 and 5,204.20 is: 7,180.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,392.05 : 11,578.15 = 5,204.20 : x
  2. Step 2: Convert to fraction form
    8,392.05/11,578.15 = 5,204.20/x
  3. Step 3: Cross multiply
    8,392.05x = 11,578.15 × 5,204.20
  4. Step 4: Simplify right side
    8,392.05x = 60,254,982.21
  5. Step 5: Solve for x
    x = 60,254,982.21/8,392.05
  6. Step 6: Final answer
    x = 7,180.01

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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.