Home / 1,328.04-1,982.34-1,231.67

Finding the Fourth Proportional to 1,328.04, 1,982.34 and 1,231.67

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Solution

The fourth proportional to 1,328.04, 1,982.34 and 1,231.67 is: 1,838.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,328.04 : 1,982.34 = 1,231.67 : x
  2. Step 2: Convert to fraction form
    1,328.04/1,982.34 = 1,231.67/x
  3. Step 3: Cross multiply
    1,328.04x = 1,982.34 × 1,231.67
  4. Step 4: Simplify right side
    1,328.04x = 2,441,578.80
  5. Step 5: Solve for x
    x = 2,441,578.80/1,328.04
  6. Step 6: Final answer
    x = 1,838.48

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.