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Finding the Fourth Proportional to 3,481.68, 4,804.92 and 1,990.10

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Solution

The fourth proportional to 3,481.68, 4,804.92 and 1,990.10 is: 2,746.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,481.68 : 4,804.92 = 1,990.10 : x
  2. Step 2: Convert to fraction form
    3,481.68/4,804.92 = 1,990.10/x
  3. Step 3: Cross multiply
    3,481.68x = 4,804.92 × 1,990.10
  4. Step 4: Simplify right side
    3,481.68x = 9,562,283.30
  5. Step 5: Solve for x
    x = 9,562,283.30/3,481.68
  6. Step 6: Final answer
    x = 2,746.45

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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 (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.