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Finding the Fourth Proportional to 8,235.95, 12,354.26 and 2,688.86

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Solution

The fourth proportional to 8,235.95, 12,354.26 and 2,688.86 is: 4,033.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,235.95 : 12,354.26 = 2,688.86 : x
  2. Step 2: Convert to fraction form
    8,235.95/12,354.26 = 2,688.86/x
  3. Step 3: Cross multiply
    8,235.95x = 12,354.26 × 2,688.86
  4. Step 4: Simplify right side
    8,235.95x = 33,218,892.98
  5. Step 5: Solve for x
    x = 33,218,892.98/8,235.95
  6. Step 6: Final answer
    x = 4,033.40

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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.