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Finding the Fourth Proportional to 8,651.61, 11,939.33 and 5,114.81

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Solution

The fourth proportional to 8,651.61, 11,939.33 and 5,114.81 is: 7,058.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,651.61 : 11,939.33 = 5,114.81 : x
  2. Step 2: Convert to fraction form
    8,651.61/11,939.33 = 5,114.81/x
  3. Step 3: Cross multiply
    8,651.61x = 11,939.33 × 5,114.81
  4. Step 4: Simplify right side
    8,651.61x = 61,067,447.11
  5. Step 5: Solve for x
    x = 61,067,447.11/8,651.61
  6. Step 6: Final answer
    x = 7,058.51

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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.