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Finding the Fourth Proportional to 8,513.52, 12,745.48 and 5,216.52

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Solution

The fourth proportional to 8,513.52, 12,745.48 and 5,216.52 is: 7,809.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,513.52 : 12,745.48 = 5,216.52 : x
  2. Step 2: Convert to fraction form
    8,513.52/12,745.48 = 5,216.52/x
  3. Step 3: Cross multiply
    8,513.52x = 12,745.48 × 5,216.52
  4. Step 4: Simplify right side
    8,513.52x = 66,487,051.33
  5. Step 5: Solve for x
    x = 66,487,051.33/8,513.52
  6. Step 6: Final answer
    x = 7,809.58

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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.