Home / 3,111.21-4,293.63-1,713.96

Finding the Fourth Proportional to 3,111.21, 4,293.63 and 1,713.96

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Solution

The fourth proportional to 3,111.21, 4,293.63 and 1,713.96 is: 2,365.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,111.21 : 4,293.63 = 1,713.96 : x
  2. Step 2: Convert to fraction form
    3,111.21/4,293.63 = 1,713.96/x
  3. Step 3: Cross multiply
    3,111.21x = 4,293.63 × 1,713.96
  4. Step 4: Simplify right side
    3,111.21x = 7,359,110.07
  5. Step 5: Solve for x
    x = 7,359,110.07/3,111.21
  6. Step 6: Final answer
    x = 2,365.35

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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.