Home / 1,245.15-1,855.19-1,227.33

Finding the Fourth Proportional to 1,245.15, 1,855.19 and 1,227.33

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Solution

The fourth proportional to 1,245.15, 1,855.19 and 1,227.33 is: 1,828.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,245.15 : 1,855.19 = 1,227.33 : x
  2. Step 2: Convert to fraction form
    1,245.15/1,855.19 = 1,227.33/x
  3. Step 3: Cross multiply
    1,245.15x = 1,855.19 × 1,227.33
  4. Step 4: Simplify right side
    1,245.15x = 2,276,933.41
  5. Step 5: Solve for x
    x = 2,276,933.41/1,245.15
  6. Step 6: Final answer
    x = 1,828.64

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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.