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Finding the Fourth Proportional to 8,936.15, 13,406.15 and 3,013.63

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Solution

The fourth proportional to 8,936.15, 13,406.15 and 3,013.63 is: 4,521.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,936.15 : 13,406.15 = 3,013.63 : x
  2. Step 2: Convert to fraction form
    8,936.15/13,406.15 = 3,013.63/x
  3. Step 3: Cross multiply
    8,936.15x = 13,406.15 × 3,013.63
  4. Step 4: Simplify right side
    8,936.15x = 40,401,175.82
  5. Step 5: Solve for x
    x = 40,401,175.82/8,936.15
  6. Step 6: Final answer
    x = 4,521.09

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1.5x scale

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.