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Finding the Fourth Proportional to 8,245.63, 11,365.65 and 6,449.92

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Solution

The fourth proportional to 8,245.63, 11,365.65 and 6,449.92 is: 8,890.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,245.63 : 11,365.65 = 6,449.92 : x
  2. Step 2: Convert to fraction form
    8,245.63/11,365.65 = 6,449.92/x
  3. Step 3: Cross multiply
    8,245.63x = 11,365.65 × 6,449.92
  4. Step 4: Simplify right side
    8,245.63x = 73,307,533.25
  5. Step 5: Solve for x
    x = 73,307,533.25/8,245.63
  6. Step 6: Final answer
    x = 8,890.47

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Double scale
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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.