Home / 3,664.49-5,057.01-1,985.90

Finding the Fourth Proportional to 3,664.49, 5,057.01 and 1,985.90

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Solution

The fourth proportional to 3,664.49, 5,057.01 and 1,985.90 is: 2,740.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,664.49 : 5,057.01 = 1,985.90 : x
  2. Step 2: Convert to fraction form
    3,664.49/5,057.01 = 1,985.90/x
  3. Step 3: Cross multiply
    3,664.49x = 5,057.01 × 1,985.90
  4. Step 4: Simplify right side
    3,664.49x = 10,042,690.87
  5. Step 5: Solve for x
    x = 10,042,690.87/3,664.49
  6. Step 6: Final answer
    x = 2,740.55

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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.