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Finding the Fourth Proportional to 8,435.39, 12,653.11 and 2,591.99

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Solution

The fourth proportional to 8,435.39, 12,653.11 and 2,591.99 is: 3,887.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,435.39 : 12,653.11 = 2,591.99 : x
  2. Step 2: Convert to fraction form
    8,435.39/12,653.11 = 2,591.99/x
  3. Step 3: Cross multiply
    8,435.39x = 12,653.11 × 2,591.99
  4. Step 4: Simplify right side
    8,435.39x = 32,796,734.59
  5. Step 5: Solve for x
    x = 32,796,734.59/8,435.39
  6. Step 6: Final answer
    x = 3,887.99

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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.