Home / 2,135.81-3,197.03-1,384.31

Finding the Fourth Proportional to 2,135.81, 3,197.03 and 1,384.31

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Solution

The fourth proportional to 2,135.81, 3,197.03 and 1,384.31 is: 2,072.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,135.81 : 3,197.03 = 1,384.31 : x
  2. Step 2: Convert to fraction form
    2,135.81/3,197.03 = 1,384.31/x
  3. Step 3: Cross multiply
    2,135.81x = 3,197.03 × 1,384.31
  4. Step 4: Simplify right side
    2,135.81x = 4,425,657.69
  5. Step 5: Solve for x
    x = 4,425,657.69/2,135.81
  6. Step 6: Final answer
    x = 2,072.13

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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.