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Finding the Fourth Proportional to 9,659.78, 14,489.97 and 3,418.93

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Solution

The fourth proportional to 9,659.78, 14,489.97 and 3,418.93 is: 5,128.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,659.78 : 14,489.97 = 3,418.93 : x
  2. Step 2: Convert to fraction form
    9,659.78/14,489.97 = 3,418.93/x
  3. Step 3: Cross multiply
    9,659.78x = 14,489.97 × 3,418.93
  4. Step 4: Simplify right side
    9,659.78x = 49,540,193.13
  5. Step 5: Solve for x
    x = 49,540,193.13/9,659.78
  6. Step 6: Final answer
    x = 5,128.50

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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.