Home / 3,131.63-4,321.66-1,715.33

Finding the Fourth Proportional to 3,131.63, 4,321.66 and 1,715.33

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Solution

The fourth proportional to 3,131.63, 4,321.66 and 1,715.33 is: 2,367.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,131.63 : 4,321.66 = 1,715.33 : x
  2. Step 2: Convert to fraction form
    3,131.63/4,321.66 = 1,715.33/x
  3. Step 3: Cross multiply
    3,131.63x = 4,321.66 × 1,715.33
  4. Step 4: Simplify right side
    3,131.63x = 7,413,073.05
  5. Step 5: Solve for x
    x = 7,413,073.05/3,131.63
  6. Step 6: Final answer
    x = 2,367.16

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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.