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Finding the Fourth Proportional to 2,162.35, 3,242.67 and 775.72

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Solution

The fourth proportional to 2,162.35, 3,242.67 and 775.72 is: 1,163.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,162.35 : 3,242.67 = 775.72 : x
  2. Step 2: Convert to fraction form
    2,162.35/3,242.67 = 775.72/x
  3. Step 3: Cross multiply
    2,162.35x = 3,242.67 × 775.72
  4. Step 4: Simplify right side
    2,162.35x = 2,515,403.97
  5. Step 5: Solve for x
    x = 2,515,403.97/2,162.35
  6. Step 6: Final answer
    x = 1,163.27

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1.5x scale

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.