Home / 2,857.81-4,289.15-2,038.09

Finding the Fourth Proportional to 2,857.81, 4,289.15 and 2,038.09

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Solution

The fourth proportional to 2,857.81, 4,289.15 and 2,038.09 is: 3,058.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,857.81 : 4,289.15 = 2,038.09 : x
  2. Step 2: Convert to fraction form
    2,857.81/4,289.15 = 2,038.09/x
  3. Step 3: Cross multiply
    2,857.81x = 4,289.15 × 2,038.09
  4. Step 4: Simplify right side
    2,857.81x = 8,741,673.72
  5. Step 5: Solve for x
    x = 8,741,673.72/2,857.81
  6. Step 6: Final answer
    x = 3,058.87

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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.