Home / 1,245.73-1,867.42-620.44

Finding the Fourth Proportional to 1,245.73, 1,867.42 and 620.44

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Solution

The fourth proportional to 1,245.73, 1,867.42 and 620.44 is: 930.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,245.73 : 1,867.42 = 620.44 : x
  2. Step 2: Convert to fraction form
    1,245.73/1,867.42 = 620.44/x
  3. Step 3: Cross multiply
    1,245.73x = 1,867.42 × 620.44
  4. Step 4: Simplify right side
    1,245.73x = 1,158,618.17
  5. Step 5: Solve for x
    x = 1,158,618.17/1,245.73
  6. Step 6: Final answer
    x = 930.07

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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.