Home / 8,709.12-13,064.64-2,784.60

Finding the Fourth Proportional to 8,709.12, 13,064.64 and 2,784.60

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Solution

The fourth proportional to 8,709.12, 13,064.64 and 2,784.60 is: 4,177.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,709.12 : 13,064.64 = 2,784.60 : x
  2. Step 2: Convert to fraction form
    8,709.12/13,064.64 = 2,784.60/x
  3. Step 3: Cross multiply
    8,709.12x = 13,064.64 × 2,784.60
  4. Step 4: Simplify right side
    8,709.12x = 36,379,796.54
  5. Step 5: Solve for x
    x = 36,379,796.54/8,709.12
  6. Step 6: Final answer
    x = 4,177.21

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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.