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Finding the Fourth Proportional to 6,161.94, 8,493.49 and 4,815.20

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Solution

The fourth proportional to 6,161.94, 8,493.49 and 4,815.20 is: 6,637.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,161.94 : 8,493.49 = 4,815.20 : x
  2. Step 2: Convert to fraction form
    6,161.94/8,493.49 = 4,815.20/x
  3. Step 3: Cross multiply
    6,161.94x = 8,493.49 × 4,815.20
  4. Step 4: Simplify right side
    6,161.94x = 40,897,853.05
  5. Step 5: Solve for x
    x = 40,897,853.05/6,161.94
  6. Step 6: Final answer
    x = 6,637.17

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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.