Home / 3,907.31-5,386.46-2,786.29

Finding the Fourth Proportional to 3,907.31, 5,386.46 and 2,786.29

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Solution

The fourth proportional to 3,907.31, 5,386.46 and 2,786.29 is: 3,841.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,907.31 : 5,386.46 = 2,786.29 : x
  2. Step 2: Convert to fraction form
    3,907.31/5,386.46 = 2,786.29/x
  3. Step 3: Cross multiply
    3,907.31x = 5,386.46 × 2,786.29
  4. Step 4: Simplify right side
    3,907.31x = 15,008,212.24
  5. Step 5: Solve for x
    x = 15,008,212.24/3,907.31
  6. Step 6: Final answer
    x = 3,841.06

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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.