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Finding the Fourth Proportional to 8,652.66, 12,991.08 and 4,438.86

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Solution

The fourth proportional to 8,652.66, 12,991.08 and 4,438.86 is: 6,664.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,652.66 : 12,991.08 = 4,438.86 : x
  2. Step 2: Convert to fraction form
    8,652.66/12,991.08 = 4,438.86/x
  3. Step 3: Cross multiply
    8,652.66x = 12,991.08 × 4,438.86
  4. Step 4: Simplify right side
    8,652.66x = 57,665,585.37
  5. Step 5: Solve for x
    x = 57,665,585.37/8,652.66
  6. Step 6: Final answer
    x = 6,664.49

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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.