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Finding the Fourth Proportional to 8,468.45, 11,686.46 and 4,742.45

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Solution

The fourth proportional to 8,468.45, 11,686.46 and 4,742.45 is: 6,544.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,468.45 : 11,686.46 = 4,742.45 : x
  2. Step 2: Convert to fraction form
    8,468.45/11,686.46 = 4,742.45/x
  3. Step 3: Cross multiply
    8,468.45x = 11,686.46 × 4,742.45
  4. Step 4: Simplify right side
    8,468.45x = 55,422,370.08
  5. Step 5: Solve for x
    x = 55,422,370.08/8,468.45
  6. Step 6: Final answer
    x = 6,544.57

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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.