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Finding the Fourth Proportional to 3,071.81, 4,239.53 and 1,745.63

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Solution

The fourth proportional to 3,071.81, 4,239.53 and 1,745.63 is: 2,409.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,071.81 : 4,239.53 = 1,745.63 : x
  2. Step 2: Convert to fraction form
    3,071.81/4,239.53 = 1,745.63/x
  3. Step 3: Cross multiply
    3,071.81x = 4,239.53 × 1,745.63
  4. Step 4: Simplify right side
    3,071.81x = 7,400,620.83
  5. Step 5: Solve for x
    x = 7,400,620.83/3,071.81
  6. Step 6: Final answer
    x = 2,409.21

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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.