Home / 2,896.47-3,996.94-1,620.31

Finding the Fourth Proportional to 2,896.47, 3,996.94 and 1,620.31

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Solution

The fourth proportional to 2,896.47, 3,996.94 and 1,620.31 is: 2,235.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,896.47 : 3,996.94 = 1,620.31 : x
  2. Step 2: Convert to fraction form
    2,896.47/3,996.94 = 1,620.31/x
  3. Step 3: Cross multiply
    2,896.47x = 3,996.94 × 1,620.31
  4. Step 4: Simplify right side
    2,896.47x = 6,476,281.85
  5. Step 5: Solve for x
    x = 6,476,281.85/2,896.47
  6. Step 6: Final answer
    x = 2,235.92

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1.5x scale

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.