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Finding the Fourth Proportional to 4,775.49, 7,163.04 and 2,178.39

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Solution

The fourth proportional to 4,775.49, 7,163.04 and 2,178.39 is: 3,267.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,775.49 : 7,163.04 = 2,178.39 : x
  2. Step 2: Convert to fraction form
    4,775.49/7,163.04 = 2,178.39/x
  3. Step 3: Cross multiply
    4,775.49x = 7,163.04 × 2,178.39
  4. Step 4: Simplify right side
    4,775.49x = 15,603,894.71
  5. Step 5: Solve for x
    x = 15,603,894.71/4,775.49
  6. Step 6: Final answer
    x = 3,267.50

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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.