Home / 7,638.84-11,455.45-2,639.94

Finding the Fourth Proportional to 7,638.84, 11,455.45 and 2,639.94

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Solution

The fourth proportional to 7,638.84, 11,455.45 and 2,639.94 is: 3,958.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,638.84 : 11,455.45 = 2,639.94 : x
  2. Step 2: Convert to fraction form
    7,638.84/11,455.45 = 2,639.94/x
  3. Step 3: Cross multiply
    7,638.84x = 11,455.45 × 2,639.94
  4. Step 4: Simplify right side
    7,638.84x = 30,241,722.98
  5. Step 5: Solve for x
    x = 30,241,722.98/7,638.84
  6. Step 6: Final answer
    x = 3,958.94

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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.