Home / 1,745.85-2,409.31-949.22

Finding the Fourth Proportional to 1,745.85, 2,409.31 and 949.22

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Solution

The fourth proportional to 1,745.85, 2,409.31 and 949.22 is: 1,309.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,745.85 : 2,409.31 = 949.22 : x
  2. Step 2: Convert to fraction form
    1,745.85/2,409.31 = 949.22/x
  3. Step 3: Cross multiply
    1,745.85x = 2,409.31 × 949.22
  4. Step 4: Simplify right side
    1,745.85x = 2,286,971.26
  5. Step 5: Solve for x
    x = 2,286,971.26/1,745.85
  6. Step 6: Final answer
    x = 1,309.95

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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.