Home / 3,690.64-5,092.87-2,118.63

Finding the Fourth Proportional to 3,690.64, 5,092.87 and 2,118.63

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Solution

The fourth proportional to 3,690.64, 5,092.87 and 2,118.63 is: 2,923.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,690.64 : 5,092.87 = 2,118.63 : x
  2. Step 2: Convert to fraction form
    3,690.64/5,092.87 = 2,118.63/x
  3. Step 3: Cross multiply
    3,690.64x = 5,092.87 × 2,118.63
  4. Step 4: Simplify right side
    3,690.64x = 10,789,907.17
  5. Step 5: Solve for x
    x = 10,789,907.17/3,690.64
  6. Step 6: Final answer
    x = 2,923.59

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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.