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Finding the Fourth Proportional to 5,819.99, 8,728.66 and 1,659.89

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Solution

The fourth proportional to 5,819.99, 8,728.66 and 1,659.89 is: 2,489.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,819.99 : 8,728.66 = 1,659.89 : x
  2. Step 2: Convert to fraction form
    5,819.99/8,728.66 = 1,659.89/x
  3. Step 3: Cross multiply
    5,819.99x = 8,728.66 × 1,659.89
  4. Step 4: Simplify right side
    5,819.99x = 14,488,639.34
  5. Step 5: Solve for x
    x = 14,488,639.34/5,819.99
  6. Step 6: Final answer
    x = 2,489.46

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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.