Home / 3,071.37-4,238.53-1,745.20

Finding the Fourth Proportional to 3,071.37, 4,238.53 and 1,745.20

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Solution

The fourth proportional to 3,071.37, 4,238.53 and 1,745.20 is: 2,408.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,071.37 : 4,238.53 = 1,745.20 : x
  2. Step 2: Convert to fraction form
    3,071.37/4,238.53 = 1,745.20/x
  3. Step 3: Cross multiply
    3,071.37x = 4,238.53 × 1,745.20
  4. Step 4: Simplify right side
    3,071.37x = 7,397,059.65
  5. Step 5: Solve for x
    x = 7,397,059.65/3,071.37
  6. Step 6: Final answer
    x = 2,408.39

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Half scale
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Double scale
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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.