Home / 3,664.80-5,057.42-1,986.20

Finding the Fourth Proportional to 3,664.80, 5,057.42 and 1,986.20

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Solution

The fourth proportional to 3,664.80, 5,057.42 and 1,986.20 is: 2,740.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,664.80 : 5,057.42 = 1,986.20 : x
  2. Step 2: Convert to fraction form
    3,664.80/5,057.42 = 1,986.20/x
  3. Step 3: Cross multiply
    3,664.80x = 5,057.42 × 1,986.20
  4. Step 4: Simplify right side
    3,664.80x = 10,045,038.84
  5. Step 5: Solve for x
    x = 10,045,038.84/3,664.80
  6. Step 6: Final answer
    x = 2,740.96

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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.