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Finding the Fourth Proportional to 8,476.72, 11,686.62 and 6,958.72

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Solution

The fourth proportional to 8,476.72, 11,686.62 and 6,958.72 is: 9,593.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,476.72 : 11,686.62 = 6,958.72 : x
  2. Step 2: Convert to fraction form
    8,476.72/11,686.62 = 6,958.72/x
  3. Step 3: Cross multiply
    8,476.72x = 11,686.62 × 6,958.72
  4. Step 4: Simplify right side
    8,476.72x = 81,323,916.33
  5. Step 5: Solve for x
    x = 81,323,916.33/8,476.72
  6. Step 6: Final answer
    x = 9,593.80

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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.