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Finding the Fourth Proportional to 2,163.95, 3,246.50 and 777.43

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Solution

The fourth proportional to 2,163.95, 3,246.50 and 777.43 is: 1,166.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,163.95 : 3,246.50 = 777.43 : x
  2. Step 2: Convert to fraction form
    2,163.95/3,246.50 = 777.43/x
  3. Step 3: Cross multiply
    2,163.95x = 3,246.50 × 777.43
  4. Step 4: Simplify right side
    2,163.95x = 2,523,928.12
  5. Step 5: Solve for x
    x = 2,523,928.12/2,163.95
  6. Step 6: Final answer
    x = 1,166.35

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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.