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Finding the Fourth Proportional to 5,809.93, 8,713.67 and 1,912.21

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Solution

The fourth proportional to 5,809.93, 8,713.67 and 1,912.21 is: 2,867.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,809.93 : 8,713.67 = 1,912.21 : x
  2. Step 2: Convert to fraction form
    5,809.93/8,713.67 = 1,912.21/x
  3. Step 3: Cross multiply
    5,809.93x = 8,713.67 × 1,912.21
  4. Step 4: Simplify right side
    5,809.93x = 16,662,366.91
  5. Step 5: Solve for x
    x = 16,662,366.91/5,809.93
  6. Step 6: Final answer
    x = 2,867.91

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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.