Home / 8,690.97-13,025.43-3,138.06

Finding the Fourth Proportional to 8,690.97, 13,025.43 and 3,138.06

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Solution

The fourth proportional to 8,690.97, 13,025.43 and 3,138.06 is: 4,703.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,690.97 : 13,025.43 = 3,138.06 : x
  2. Step 2: Convert to fraction form
    8,690.97/13,025.43 = 3,138.06/x
  3. Step 3: Cross multiply
    8,690.97x = 13,025.43 × 3,138.06
  4. Step 4: Simplify right side
    8,690.97x = 40,874,580.87
  5. Step 5: Solve for x
    x = 40,874,580.87/8,690.97
  6. Step 6: Final answer
    x = 4,703.11

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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.