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Finding the Fourth Proportional to 6,426.09, 9,639.09 and 1,809.09

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Solution

The fourth proportional to 6,426.09, 9,639.09 and 1,809.09 is: 2,713.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,426.09 : 9,639.09 = 1,809.09 : x
  2. Step 2: Convert to fraction form
    6,426.09/9,639.09 = 1,809.09/x
  3. Step 3: Cross multiply
    6,426.09x = 9,639.09 × 1,809.09
  4. Step 4: Simplify right side
    6,426.09x = 17,437,981.33
  5. Step 5: Solve for x
    x = 17,437,981.33/6,426.09
  6. Step 6: Final answer
    x = 2,713.62

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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.