Home / 8,639.64-12,961.98-2,796.12

Finding the Fourth Proportional to 8,639.64, 12,961.98 and 2,796.12

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Solution

The fourth proportional to 8,639.64, 12,961.98 and 2,796.12 is: 4,195.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,639.64 : 12,961.98 = 2,796.12 : x
  2. Step 2: Convert to fraction form
    8,639.64/12,961.98 = 2,796.12/x
  3. Step 3: Cross multiply
    8,639.64x = 12,961.98 × 2,796.12
  4. Step 4: Simplify right side
    8,639.64x = 36,243,251.52
  5. Step 5: Solve for x
    x = 36,243,251.52/8,639.64
  6. Step 6: Final answer
    x = 4,195.00

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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.