Home / 2,645.58-3,968.37-1,105.50

Finding the Fourth Proportional to 2,645.58, 3,968.37 and 1,105.50

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Solution

The fourth proportional to 2,645.58, 3,968.37 and 1,105.50 is: 1,658.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,645.58 : 3,968.37 = 1,105.50 : x
  2. Step 2: Convert to fraction form
    2,645.58/3,968.37 = 1,105.50/x
  3. Step 3: Cross multiply
    2,645.58x = 3,968.37 × 1,105.50
  4. Step 4: Simplify right side
    2,645.58x = 4,387,033.04
  5. Step 5: Solve for x
    x = 4,387,033.04/2,645.58
  6. Step 6: Final answer
    x = 1,658.25

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Half scale
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Double scale
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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.