Home / 3,021.78-4,170.09-1,677.48

Finding the Fourth Proportional to 3,021.78, 4,170.09 and 1,677.48

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Solution

The fourth proportional to 3,021.78, 4,170.09 and 1,677.48 is: 2,314.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,021.78 : 4,170.09 = 1,677.48 : x
  2. Step 2: Convert to fraction form
    3,021.78/4,170.09 = 1,677.48/x
  3. Step 3: Cross multiply
    3,021.78x = 4,170.09 × 1,677.48
  4. Step 4: Simplify right side
    3,021.78x = 6,995,242.57
  5. Step 5: Solve for x
    x = 6,995,242.57/3,021.78
  6. Step 6: Final answer
    x = 2,314.94

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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.