Home / 3,664.78-5,057.40-1,986.19

Finding the Fourth Proportional to 3,664.78, 5,057.40 and 1,986.19

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Solution

The fourth proportional to 3,664.78, 5,057.40 and 1,986.19 is: 2,740.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,664.78 : 5,057.40 = 1,986.19 : x
  2. Step 2: Convert to fraction form
    3,664.78/5,057.40 = 1,986.19/x
  3. Step 3: Cross multiply
    3,664.78x = 5,057.40 × 1,986.19
  4. Step 4: Simplify right side
    3,664.78x = 10,044,952.11
  5. Step 5: Solve for x
    x = 10,044,952.11/3,664.78
  6. Step 6: Final answer
    x = 2,740.94

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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.