Home / 2,742.26-3,783.41-1,678.91

Finding the Fourth Proportional to 2,742.26, 3,783.41 and 1,678.91

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Solution

The fourth proportional to 2,742.26, 3,783.41 and 1,678.91 is: 2,316.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,742.26 : 3,783.41 = 1,678.91 : x
  2. Step 2: Convert to fraction form
    2,742.26/3,783.41 = 1,678.91/x
  3. Step 3: Cross multiply
    2,742.26x = 3,783.41 × 1,678.91
  4. Step 4: Simplify right side
    2,742.26x = 6,351,977.57
  5. Step 5: Solve for x
    x = 6,351,977.57/2,742.26
  6. Step 6: Final answer
    x = 2,316.33

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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.