Home / 3,391.19-5,086.47-1,309.94

Finding the Fourth Proportional to 3,391.19, 5,086.47 and 1,309.94

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Solution

The fourth proportional to 3,391.19, 5,086.47 and 1,309.94 is: 1,964.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,391.19 : 5,086.47 = 1,309.94 : x
  2. Step 2: Convert to fraction form
    3,391.19/5,086.47 = 1,309.94/x
  3. Step 3: Cross multiply
    3,391.19x = 5,086.47 × 1,309.94
  4. Step 4: Simplify right side
    3,391.19x = 6,662,970.51
  5. Step 5: Solve for x
    x = 6,662,970.51/3,391.19
  6. Step 6: Final answer
    x = 1,964.79

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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.