Home / 3,131.23-4,321.14-1,714.89

Finding the Fourth Proportional to 3,131.23, 4,321.14 and 1,714.89

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Solution

The fourth proportional to 3,131.23, 4,321.14 and 1,714.89 is: 2,366.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,131.23 : 4,321.14 = 1,714.89 : x
  2. Step 2: Convert to fraction form
    3,131.23/4,321.14 = 1,714.89/x
  3. Step 3: Cross multiply
    3,131.23x = 4,321.14 × 1,714.89
  4. Step 4: Simplify right side
    3,131.23x = 7,410,284.06
  5. Step 5: Solve for x
    x = 7,410,284.06/3,131.23
  6. Step 6: Final answer
    x = 2,366.58

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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.