Home / 3,131.90-4,322.01-1,734.65

Finding the Fourth Proportional to 3,131.90, 4,322.01 and 1,734.65

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Solution

The fourth proportional to 3,131.90, 4,322.01 and 1,734.65 is: 2,393.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,131.90 : 4,322.01 = 1,734.65 : x
  2. Step 2: Convert to fraction form
    3,131.90/4,322.01 = 1,734.65/x
  3. Step 3: Cross multiply
    3,131.90x = 4,322.01 × 1,734.65
  4. Step 4: Simplify right side
    3,131.90x = 7,497,153.04
  5. Step 5: Solve for x
    x = 7,497,153.04/3,131.90
  6. Step 6: Final answer
    x = 2,393.81

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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.