Home / 2,814.38-3,878.43-1,984.94

Finding the Fourth Proportional to 2,814.38, 3,878.43 and 1,984.94

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Solution

The fourth proportional to 2,814.38, 3,878.43 and 1,984.94 is: 2,735.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,814.38 : 3,878.43 = 1,984.94 : x
  2. Step 2: Convert to fraction form
    2,814.38/3,878.43 = 1,984.94/x
  3. Step 3: Cross multiply
    2,814.38x = 3,878.43 × 1,984.94
  4. Step 4: Simplify right side
    2,814.38x = 7,698,450.84
  5. Step 5: Solve for x
    x = 7,698,450.84/2,814.38
  6. Step 6: Final answer
    x = 2,735.40

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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.