Home / 2,161.30-3,239.79-1,066.45

Finding the Fourth Proportional to 2,161.30, 3,239.79 and 1,066.45

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Solution

The fourth proportional to 2,161.30, 3,239.79 and 1,066.45 is: 1,598.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,161.30 : 3,239.79 = 1,066.45 : x
  2. Step 2: Convert to fraction form
    2,161.30/3,239.79 = 1,066.45/x
  3. Step 3: Cross multiply
    2,161.30x = 3,239.79 × 1,066.45
  4. Step 4: Simplify right side
    2,161.30x = 3,455,074.05
  5. Step 5: Solve for x
    x = 3,455,074.05/2,161.30
  6. Step 6: Final answer
    x = 1,598.61

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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.