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Finding the Fourth Proportional to 6,414.32, 8,851.94 and 3,620

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Solution

The fourth proportional to 6,414.32, 8,851.94 and 3,620 is: 4,995.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,414.32 : 8,851.94 = 3,620 : x
  2. Step 2: Convert to fraction form
    6,414.32/8,851.94 = 3,620/x
  3. Step 3: Cross multiply
    6,414.32x = 8,851.94 × 3,620
  4. Step 4: Simplify right side
    6,414.32x = 32,044,022.80
  5. Step 5: Solve for x
    x = 32,044,022.80/6,414.32
  6. Step 6: Final answer
    x = 4,995.70

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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.