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Finding the Fourth Proportional to 8,886.78, 13,328.82 and 5,589.81

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Solution

The fourth proportional to 8,886.78, 13,328.82 and 5,589.81 is: 8,383.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,886.78 : 13,328.82 = 5,589.81 : x
  2. Step 2: Convert to fraction form
    8,886.78/13,328.82 = 5,589.81/x
  3. Step 3: Cross multiply
    8,886.78x = 13,328.82 × 5,589.81
  4. Step 4: Simplify right side
    8,886.78x = 74,505,571.32
  5. Step 5: Solve for x
    x = 74,505,571.32/8,886.78
  6. Step 6: Final answer
    x = 8,383.87

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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.