Home / 3,481.51-4,804.18-1,989.13

Finding the Fourth Proportional to 3,481.51, 4,804.18 and 1,989.13

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Solution

The fourth proportional to 3,481.51, 4,804.18 and 1,989.13 is: 2,744.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,481.51 : 4,804.18 = 1,989.13 : x
  2. Step 2: Convert to fraction form
    3,481.51/4,804.18 = 1,989.13/x
  3. Step 3: Cross multiply
    3,481.51x = 4,804.18 × 1,989.13
  4. Step 4: Simplify right side
    3,481.51x = 9,556,138.56
  5. Step 5: Solve for x
    x = 9,556,138.56/3,481.51
  6. Step 6: Final answer
    x = 2,744.83

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Half scale
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Double scale
Find fourth proportional to 3,482.51, 4,805.56 and 1,990.13
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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.