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Finding the Fourth Proportional to 8,889.60, 13,308.80 and 5,433.60

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Solution

The fourth proportional to 8,889.60, 13,308.80 and 5,433.60 is: 8,134.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,889.60 : 13,308.80 = 5,433.60 : x
  2. Step 2: Convert to fraction form
    8,889.60/13,308.80 = 5,433.60/x
  3. Step 3: Cross multiply
    8,889.60x = 13,308.80 × 5,433.60
  4. Step 4: Simplify right side
    8,889.60x = 72,314,695.68
  5. Step 5: Solve for x
    x = 72,314,695.68/8,889.60
  6. Step 6: Final answer
    x = 8,134.75

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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.