Home / 2,812.38-3,879.46-2,055.19

Finding the Fourth Proportional to 2,812.38, 3,879.46 and 2,055.19

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Solution

The fourth proportional to 2,812.38, 3,879.46 and 2,055.19 is: 2,834.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,812.38 : 3,879.46 = 2,055.19 : x
  2. Step 2: Convert to fraction form
    2,812.38/3,879.46 = 2,055.19/x
  3. Step 3: Cross multiply
    2,812.38x = 3,879.46 × 2,055.19
  4. Step 4: Simplify right side
    2,812.38x = 7,973,027.40
  5. Step 5: Solve for x
    x = 7,973,027.40/2,812.38
  6. Step 6: Final answer
    x = 2,834.98

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Half scale
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Double scale
Find fourth proportional to 2,813.38, 3,880.84 and 2,056.19
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.