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Finding the Fourth Proportional to 8,693.88, 13,029.63 and 3,946.57

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Solution

The fourth proportional to 8,693.88, 13,029.63 and 3,946.57 is: 5,914.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,693.88 : 13,029.63 = 3,946.57 : x
  2. Step 2: Convert to fraction form
    8,693.88/13,029.63 = 3,946.57/x
  3. Step 3: Cross multiply
    8,693.88x = 13,029.63 × 3,946.57
  4. Step 4: Simplify right side
    8,693.88x = 51,422,346.87
  5. Step 5: Solve for x
    x = 51,422,346.87/8,693.88
  6. Step 6: Final answer
    x = 5,914.78

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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.