Home / 1,930.12-2,878.23-1,912.58

Finding the Fourth Proportional to 1,930.12, 2,878.23 and 1,912.58

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Solution

The fourth proportional to 1,930.12, 2,878.23 and 1,912.58 is: 2,852.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,930.12 : 2,878.23 = 1,912.58 : x
  2. Step 2: Convert to fraction form
    1,930.12/2,878.23 = 1,912.58/x
  3. Step 3: Cross multiply
    1,930.12x = 2,878.23 × 1,912.58
  4. Step 4: Simplify right side
    1,930.12x = 5,504,845.13
  5. Step 5: Solve for x
    x = 5,504,845.13/1,930.12
  6. Step 6: Final answer
    x = 2,852.07

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.