Home / 3,131.56-4,321.64-1,734.32

Finding the Fourth Proportional to 3,131.56, 4,321.64 and 1,734.32

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Solution

The fourth proportional to 3,131.56, 4,321.64 and 1,734.32 is: 2,393.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,131.56 : 4,321.64 = 1,734.32 : x
  2. Step 2: Convert to fraction form
    3,131.56/4,321.64 = 1,734.32/x
  3. Step 3: Cross multiply
    3,131.56x = 4,321.64 × 1,734.32
  4. Step 4: Simplify right side
    3,131.56x = 7,495,106.68
  5. Step 5: Solve for x
    x = 7,495,106.68/3,131.56
  6. Step 6: Final answer
    x = 2,393.41

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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.