Home / 3,907.18-5,386.30-2,786.18

Finding the Fourth Proportional to 3,907.18, 5,386.30 and 2,786.18

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Solution

The fourth proportional to 3,907.18, 5,386.30 and 2,786.18 is: 3,840.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,907.18 : 5,386.30 = 2,786.18 : x
  2. Step 2: Convert to fraction form
    3,907.18/5,386.30 = 2,786.18/x
  3. Step 3: Cross multiply
    3,907.18x = 5,386.30 × 2,786.18
  4. Step 4: Simplify right side
    3,907.18x = 15,007,201.33
  5. Step 5: Solve for x
    x = 15,007,201.33/3,907.18
  6. Step 6: Final answer
    x = 3,840.93

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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.