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Finding the Fourth Proportional to 8,674.10, 13,007.95 and 2,830.90

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Solution

The fourth proportional to 8,674.10, 13,007.95 and 2,830.90 is: 4,245.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,674.10 : 13,007.95 = 2,830.90 : x
  2. Step 2: Convert to fraction form
    8,674.10/13,007.95 = 2,830.90/x
  3. Step 3: Cross multiply
    8,674.10x = 13,007.95 × 2,830.90
  4. Step 4: Simplify right side
    8,674.10x = 36,824,205.66
  5. Step 5: Solve for x
    x = 36,824,205.66/8,674.10
  6. Step 6: Final answer
    x = 4,245.31

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.