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Finding the Fourth Proportional to 8,629.29, 11,953.51 and 8,454.33

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Solution

The fourth proportional to 8,629.29, 11,953.51 and 8,454.33 is: 11,711.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,629.29 : 11,953.51 = 8,454.33 : x
  2. Step 2: Convert to fraction form
    8,629.29/11,953.51 = 8,454.33/x
  3. Step 3: Cross multiply
    8,629.29x = 11,953.51 × 8,454.33
  4. Step 4: Simplify right side
    8,629.29x = 101,058,897.06
  5. Step 5: Solve for x
    x = 101,058,897.06/8,629.29
  6. Step 6: Final answer
    x = 11,711.15

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.