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Finding the Fourth Proportional to 8,539.52, 12,745.29 and 7,499.48

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Solution

The fourth proportional to 8,539.52, 12,745.29 and 7,499.48 is: 11,193.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,539.52 : 12,745.29 = 7,499.48 : x
  2. Step 2: Convert to fraction form
    8,539.52/12,745.29 = 7,499.48/x
  3. Step 3: Cross multiply
    8,539.52x = 12,745.29 × 7,499.48
  4. Step 4: Simplify right side
    8,539.52x = 95,583,009.95
  5. Step 5: Solve for x
    x = 95,583,009.95/8,539.52
  6. Step 6: Final answer
    x = 11,193.02

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.