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Finding the Fourth Proportional to 8,654.22, 12,986.81 and 4,963.66

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Solution

The fourth proportional to 8,654.22, 12,986.81 and 4,963.66 is: 7,448.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,654.22 : 12,986.81 = 4,963.66 : x
  2. Step 2: Convert to fraction form
    8,654.22/12,986.81 = 4,963.66/x
  3. Step 3: Cross multiply
    8,654.22x = 12,986.81 × 4,963.66
  4. Step 4: Simplify right side
    8,654.22x = 64,462,119.35
  5. Step 5: Solve for x
    x = 64,462,119.35/8,654.22
  6. Step 6: Final answer
    x = 7,448.63

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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.