Home / 1,623.20-2,240.60-993.59

Finding the Fourth Proportional to 1,623.20, 2,240.60 and 993.59

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Solution

The fourth proportional to 1,623.20, 2,240.60 and 993.59 is: 1,371.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,623.20 : 2,240.60 = 993.59 : x
  2. Step 2: Convert to fraction form
    1,623.20/2,240.60 = 993.59/x
  3. Step 3: Cross multiply
    1,623.20x = 2,240.60 × 993.59
  4. Step 4: Simplify right side
    1,623.20x = 2,226,231.03
  5. Step 5: Solve for x
    x = 2,226,231.03/1,623.20
  6. Step 6: Final answer
    x = 1,371.50

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Half scale
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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.