Home / 1,939.27-2,670.79-1,583.55

Finding the Fourth Proportional to 1,939.27, 2,670.79 and 1,583.55

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Solution

The fourth proportional to 1,939.27, 2,670.79 and 1,583.55 is: 2,180.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,939.27 : 2,670.79 = 1,583.55 : x
  2. Step 2: Convert to fraction form
    1,939.27/2,670.79 = 1,583.55/x
  3. Step 3: Cross multiply
    1,939.27x = 2,670.79 × 1,583.55
  4. Step 4: Simplify right side
    1,939.27x = 4,229,329.50
  5. Step 5: Solve for x
    x = 4,229,329.50/1,939.27
  6. Step 6: Final answer
    x = 2,180.89

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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.