Home / 3,947.79-5,907.07-3,165.40

Finding the Fourth Proportional to 3,947.79, 5,907.07 and 3,165.40

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Solution

The fourth proportional to 3,947.79, 5,907.07 and 3,165.40 is: 4,736.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,947.79 : 5,907.07 = 3,165.40 : x
  2. Step 2: Convert to fraction form
    3,947.79/5,907.07 = 3,165.40/x
  3. Step 3: Cross multiply
    3,947.79x = 5,907.07 × 3,165.40
  4. Step 4: Simplify right side
    3,947.79x = 18,698,239.38
  5. Step 5: Solve for x
    x = 18,698,239.38/3,947.79
  6. Step 6: Final answer
    x = 4,736.38

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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.