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Finding the Fourth Proportional to 8,682.42, 13,015.80 and 7,374.54

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Solution

The fourth proportional to 8,682.42, 13,015.80 and 7,374.54 is: 11,055.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,682.42 : 13,015.80 = 7,374.54 : x
  2. Step 2: Convert to fraction form
    8,682.42/13,015.80 = 7,374.54/x
  3. Step 3: Cross multiply
    8,682.42x = 13,015.80 × 7,374.54
  4. Step 4: Simplify right side
    8,682.42x = 95,985,537.73
  5. Step 5: Solve for x
    x = 95,985,537.73/8,682.42
  6. Step 6: Final answer
    x = 11,055.16

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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.