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Finding the Fourth Proportional to 8,476.60, 11,699.84 and 5,648.72

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Solution

The fourth proportional to 8,476.60, 11,699.84 and 5,648.72 is: 7,796.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,476.60 : 11,699.84 = 5,648.72 : x
  2. Step 2: Convert to fraction form
    8,476.60/11,699.84 = 5,648.72/x
  3. Step 3: Cross multiply
    8,476.60x = 11,699.84 × 5,648.72
  4. Step 4: Simplify right side
    8,476.60x = 66,089,120.20
  5. Step 5: Solve for x
    x = 66,089,120.20/8,476.60
  6. Step 6: Final answer
    x = 7,796.65

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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.