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Finding the Fourth Proportional to 8,670.36, 13,007.22 and 3,124.44

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Solution

The fourth proportional to 8,670.36, 13,007.22 and 3,124.44 is: 4,687.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,670.36 : 13,007.22 = 3,124.44 : x
  2. Step 2: Convert to fraction form
    8,670.36/13,007.22 = 3,124.44/x
  3. Step 3: Cross multiply
    8,670.36x = 13,007.22 × 3,124.44
  4. Step 4: Simplify right side
    8,670.36x = 40,640,278.46
  5. Step 5: Solve for x
    x = 40,640,278.46/8,670.36
  6. Step 6: Final answer
    x = 4,687.27

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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.