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Finding the Fourth Proportional to 8,422.10, 12,632.11 and 2,876.00

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Solution

The fourth proportional to 8,422.10, 12,632.11 and 2,876.00 is: 4,313.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,422.10 : 12,632.11 = 2,876.00 : x
  2. Step 2: Convert to fraction form
    8,422.10/12,632.11 = 2,876.00/x
  3. Step 3: Cross multiply
    8,422.10x = 12,632.11 × 2,876.00
  4. Step 4: Simplify right side
    8,422.10x = 36,329,878.01
  5. Step 5: Solve for x
    x = 36,329,878.01/8,422.10
  6. Step 6: Final answer
    x = 4,313.64

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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.