Home / 2,097.20-2,893.78-1,212.80

Finding the Fourth Proportional to 2,097.20, 2,893.78 and 1,212.80

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Solution

The fourth proportional to 2,097.20, 2,893.78 and 1,212.80 is: 1,673.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,097.20 : 2,893.78 = 1,212.80 : x
  2. Step 2: Convert to fraction form
    2,097.20/2,893.78 = 1,212.80/x
  3. Step 3: Cross multiply
    2,097.20x = 2,893.78 × 1,212.80
  4. Step 4: Simplify right side
    2,097.20x = 3,509,576.38
  5. Step 5: Solve for x
    x = 3,509,576.38/2,097.20
  6. Step 6: Final answer
    x = 1,673.46

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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.