Home / 3,071.07-4,238.86-1,745.20

Finding the Fourth Proportional to 3,071.07, 4,238.86 and 1,745.20

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Solution

The fourth proportional to 3,071.07, 4,238.86 and 1,745.20 is: 2,408.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,071.07 : 4,238.86 = 1,745.20 : x
  2. Step 2: Convert to fraction form
    3,071.07/4,238.86 = 1,745.20/x
  3. Step 3: Cross multiply
    3,071.07x = 4,238.86 × 1,745.20
  4. Step 4: Simplify right side
    3,071.07x = 7,397,658.47
  5. Step 5: Solve for x
    x = 7,397,658.47/3,071.07
  6. Step 6: Final answer
    x = 2,408.82

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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.