Home / 3,455.82-4,769.93-2,130.61

Finding the Fourth Proportional to 3,455.82, 4,769.93 and 2,130.61

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Solution

The fourth proportional to 3,455.82, 4,769.93 and 2,130.61 is: 2,940.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,455.82 : 4,769.93 = 2,130.61 : x
  2. Step 2: Convert to fraction form
    3,455.82/4,769.93 = 2,130.61/x
  3. Step 3: Cross multiply
    3,455.82x = 4,769.93 × 2,130.61
  4. Step 4: Simplify right side
    3,455.82x = 10,162,860.56
  5. Step 5: Solve for x
    x = 10,162,860.56/3,455.82
  6. Step 6: Final answer
    x = 2,940.80

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.