Home / 3,907.46-5,386.67-2,786.44

Finding the Fourth Proportional to 3,907.46, 5,386.67 and 2,786.44

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Solution

The fourth proportional to 3,907.46, 5,386.67 and 2,786.44 is: 3,841.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,907.46 : 5,386.67 = 2,786.44 : x
  2. Step 2: Convert to fraction form
    3,907.46/5,386.67 = 2,786.44/x
  3. Step 3: Cross multiply
    3,907.46x = 5,386.67 × 2,786.44
  4. Step 4: Simplify right side
    3,907.46x = 15,009,632.75
  5. Step 5: Solve for x
    x = 15,009,632.75/3,907.46
  6. Step 6: Final answer
    x = 3,841.28

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1.5x scale

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.