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Finding the Fourth Proportional to 8,540.65, 11,786.39 and 4,955.34

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Solution

The fourth proportional to 8,540.65, 11,786.39 and 4,955.34 is: 6,838.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,540.65 : 11,786.39 = 4,955.34 : x
  2. Step 2: Convert to fraction form
    8,540.65/11,786.39 = 4,955.34/x
  3. Step 3: Cross multiply
    8,540.65x = 11,786.39 × 4,955.34
  4. Step 4: Simplify right side
    8,540.65x = 58,405,569.82
  5. Step 5: Solve for x
    x = 58,405,569.82/8,540.65
  6. Step 6: Final answer
    x = 6,838.54

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.