Home / 1,908.10-2,860.36-1,438.85

Finding the Fourth Proportional to 1,908.10, 2,860.36 and 1,438.85

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Solution

The fourth proportional to 1,908.10, 2,860.36 and 1,438.85 is: 2,156.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,908.10 : 2,860.36 = 1,438.85 : x
  2. Step 2: Convert to fraction form
    1,908.10/2,860.36 = 1,438.85/x
  3. Step 3: Cross multiply
    1,908.10x = 2,860.36 × 1,438.85
  4. Step 4: Simplify right side
    1,908.10x = 4,115,632.54
  5. Step 5: Solve for x
    x = 4,115,632.54/1,908.10
  6. Step 6: Final answer
    x = 2,156.93

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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.