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Finding the Fourth Proportional to 5,685.58, 8,529.72 and 1,789.99

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Solution

The fourth proportional to 5,685.58, 8,529.72 and 1,789.99 is: 2,685.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,685.58 : 8,529.72 = 1,789.99 : x
  2. Step 2: Convert to fraction form
    5,685.58/8,529.72 = 1,789.99/x
  3. Step 3: Cross multiply
    5,685.58x = 8,529.72 × 1,789.99
  4. Step 4: Simplify right side
    5,685.58x = 15,268,113.50
  5. Step 5: Solve for x
    x = 15,268,113.50/5,685.58
  6. Step 6: Final answer
    x = 2,685.41

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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.