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Finding the Fourth Proportional to 8,662.90, 12,973.72 and 5,533.21

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Solution

The fourth proportional to 8,662.90, 12,973.72 and 5,533.21 is: 8,286.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,662.90 : 12,973.72 = 5,533.21 : x
  2. Step 2: Convert to fraction form
    8,662.90/12,973.72 = 5,533.21/x
  3. Step 3: Cross multiply
    8,662.90x = 12,973.72 × 5,533.21
  4. Step 4: Simplify right side
    8,662.90x = 71,786,317.24
  5. Step 5: Solve for x
    x = 71,786,317.24/8,662.90
  6. Step 6: Final answer
    x = 8,286.64

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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.