Home / 2,939.81-4,057.00-1,613.60

Finding the Fourth Proportional to 2,939.81, 4,057.00 and 1,613.60

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Solution

The fourth proportional to 2,939.81, 4,057.00 and 1,613.60 is: 2,226.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,939.81 : 4,057.00 = 1,613.60 : x
  2. Step 2: Convert to fraction form
    2,939.81/4,057.00 = 1,613.60/x
  3. Step 3: Cross multiply
    2,939.81x = 4,057.00 × 1,613.60
  4. Step 4: Simplify right side
    2,939.81x = 6,546,366.09
  5. Step 5: Solve for x
    x = 6,546,366.09/2,939.81
  6. Step 6: Final answer
    x = 2,226.80

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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.