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Finding the Fourth Proportional to 8,771.60, 13,160.64 and 3,840.32

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Solution

The fourth proportional to 8,771.60, 13,160.64 and 3,840.32 is: 5,761.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,771.60 : 13,160.64 = 3,840.32 : x
  2. Step 2: Convert to fraction form
    8,771.60/13,160.64 = 3,840.32/x
  3. Step 3: Cross multiply
    8,771.60x = 13,160.64 × 3,840.32
  4. Step 4: Simplify right side
    8,771.60x = 50,541,069.00
  5. Step 5: Solve for x
    x = 50,541,069.00/8,771.60
  6. Step 6: Final answer
    x = 5,761.90

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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.