Home / 3,112.76-4,296.18-1,994.18

Finding the Fourth Proportional to 3,112.76, 4,296.18 and 1,994.18

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Solution

The fourth proportional to 3,112.76, 4,296.18 and 1,994.18 is: 2,752.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,112.76 : 4,296.18 = 1,994.18 : x
  2. Step 2: Convert to fraction form
    3,112.76/4,296.18 = 1,994.18/x
  3. Step 3: Cross multiply
    3,112.76x = 4,296.18 × 1,994.18
  4. Step 4: Simplify right side
    3,112.76x = 8,567,356.23
  5. Step 5: Solve for x
    x = 8,567,356.23/3,112.76
  6. Step 6: Final answer
    x = 2,752.33

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Half scale
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Double 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.