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Finding the Fourth Proportional to 8,539.66, 12,810.86 and 3,609.35

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Solution

The fourth proportional to 8,539.66, 12,810.86 and 3,609.35 is: 5,414.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,539.66 : 12,810.86 = 3,609.35 : x
  2. Step 2: Convert to fraction form
    8,539.66/12,810.86 = 3,609.35/x
  3. Step 3: Cross multiply
    8,539.66x = 12,810.86 × 3,609.35
  4. Step 4: Simplify right side
    8,539.66x = 46,238,857.02
  5. Step 5: Solve for x
    x = 46,238,857.02/8,539.66
  6. Step 6: Final answer
    x = 5,414.60

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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.