Home / 3,131.19-4,695.40-1,670.03

Finding the Fourth Proportional to 3,131.19, 4,695.40 and 1,670.03

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Solution

The fourth proportional to 3,131.19, 4,695.40 and 1,670.03 is: 2,504.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,131.19 : 4,695.40 = 1,670.03 : x
  2. Step 2: Convert to fraction form
    3,131.19/4,695.40 = 1,670.03/x
  3. Step 3: Cross multiply
    3,131.19x = 4,695.40 × 1,670.03
  4. Step 4: Simplify right side
    3,131.19x = 7,841,458.86
  5. Step 5: Solve for x
    x = 7,841,458.86/3,131.19
  6. Step 6: Final answer
    x = 2,504.31

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.