Home / 2,021.49-3,029.78-851.04

Finding the Fourth Proportional to 2,021.49, 3,029.78 and 851.04

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Solution

The fourth proportional to 2,021.49, 3,029.78 and 851.04 is: 1,275.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,021.49 : 3,029.78 = 851.04 : x
  2. Step 2: Convert to fraction form
    2,021.49/3,029.78 = 851.04/x
  3. Step 3: Cross multiply
    2,021.49x = 3,029.78 × 851.04
  4. Step 4: Simplify right side
    2,021.49x = 2,578,466.10
  5. Step 5: Solve for x
    x = 2,578,466.10/2,021.49
  6. Step 6: Final answer
    x = 1,275.53

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.