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Finding the Fourth Proportional to 8,652.48, 11,936.84 and 6,389.24

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Solution

The fourth proportional to 8,652.48, 11,936.84 and 6,389.24 is: 8,814.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,652.48 : 11,936.84 = 6,389.24 : x
  2. Step 2: Convert to fraction form
    8,652.48/11,936.84 = 6,389.24/x
  3. Step 3: Cross multiply
    8,652.48x = 11,936.84 × 6,389.24
  4. Step 4: Simplify right side
    8,652.48x = 76,267,335.60
  5. Step 5: Solve for x
    x = 76,267,335.60/8,652.48
  6. Step 6: Final answer
    x = 8,814.51

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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.