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Finding the Fourth Proportional to 5,713.85, 8,571.63 and 1,819.13

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Solution

The fourth proportional to 5,713.85, 8,571.63 and 1,819.13 is: 2,728.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,713.85 : 8,571.63 = 1,819.13 : x
  2. Step 2: Convert to fraction form
    5,713.85/8,571.63 = 1,819.13/x
  3. Step 3: Cross multiply
    5,713.85x = 8,571.63 × 1,819.13
  4. Step 4: Simplify right side
    5,713.85x = 15,592,909.28
  5. Step 5: Solve for x
    x = 15,592,909.28/5,713.85
  6. Step 6: Final answer
    x = 2,728.97

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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.