Home / 3,579.36-4,939.80-1,986.16

Finding the Fourth Proportional to 3,579.36, 4,939.80 and 1,986.16

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Solution

The fourth proportional to 3,579.36, 4,939.80 and 1,986.16 is: 2,741.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,579.36 : 4,939.80 = 1,986.16 : x
  2. Step 2: Convert to fraction form
    3,579.36/4,939.80 = 1,986.16/x
  3. Step 3: Cross multiply
    3,579.36x = 4,939.80 × 1,986.16
  4. Step 4: Simplify right side
    3,579.36x = 9,811,233.17
  5. Step 5: Solve for x
    x = 9,811,233.17/3,579.36
  6. Step 6: Final answer
    x = 2,741.06

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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.