Home / 3,938.36-5,907.13-1,305.77

Finding the Fourth Proportional to 3,938.36, 5,907.13 and 1,305.77

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Solution

The fourth proportional to 3,938.36, 5,907.13 and 1,305.77 is: 1,958.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,938.36 : 5,907.13 = 1,305.77 : x
  2. Step 2: Convert to fraction form
    3,938.36/5,907.13 = 1,305.77/x
  3. Step 3: Cross multiply
    3,938.36x = 5,907.13 × 1,305.77
  4. Step 4: Simplify right side
    3,938.36x = 7,713,320.34
  5. Step 5: Solve for x
    x = 7,713,320.34/3,938.36
  6. Step 6: Final answer
    x = 1,958.51

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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.