Home / 1,619.12-2,235.47-1,245.44

Finding the Fourth Proportional to 1,619.12, 2,235.47 and 1,245.44

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Solution

The fourth proportional to 1,619.12, 2,235.47 and 1,245.44 is: 1,719.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,619.12 : 2,235.47 = 1,245.44 : x
  2. Step 2: Convert to fraction form
    1,619.12/2,235.47 = 1,245.44/x
  3. Step 3: Cross multiply
    1,619.12x = 2,235.47 × 1,245.44
  4. Step 4: Simplify right side
    1,619.12x = 2,784,143.12
  5. Step 5: Solve for x
    x = 2,784,143.12/1,619.12
  6. Step 6: Final answer
    x = 1,719.54

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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.