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Finding the Fourth Proportional to 3,596.94, 5,392.11 and 1,287.90

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Solution

The fourth proportional to 3,596.94, 5,392.11 and 1,287.90 is: 1,930.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,596.94 : 5,392.11 = 1,287.90 : x
  2. Step 2: Convert to fraction form
    3,596.94/5,392.11 = 1,287.90/x
  3. Step 3: Cross multiply
    3,596.94x = 5,392.11 × 1,287.90
  4. Step 4: Simplify right side
    3,596.94x = 6,944,498.47
  5. Step 5: Solve for x
    x = 6,944,498.47/3,596.94
  6. Step 6: Final answer
    x = 1,930.67

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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.