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Finding the Fourth Proportional to 6,387.72, 9,582.72 and 2,438.82

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Solution

The fourth proportional to 6,387.72, 9,582.72 and 2,438.82 is: 3,658.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,387.72 : 9,582.72 = 2,438.82 : x
  2. Step 2: Convert to fraction form
    6,387.72/9,582.72 = 2,438.82/x
  3. Step 3: Cross multiply
    6,387.72x = 9,582.72 × 2,438.82
  4. Step 4: Simplify right side
    6,387.72x = 23,370,529.19
  5. Step 5: Solve for x
    x = 23,370,529.19/6,387.72
  6. Step 6: Final answer
    x = 3,658.67

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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.