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Finding the Fourth Proportional to 2,683.80, 4,023.22 and 1,222

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Solution

The fourth proportional to 2,683.80, 4,023.22 and 1,222 is: 1,831.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,683.80 : 4,023.22 = 1,222 : x
  2. Step 2: Convert to fraction form
    2,683.80/4,023.22 = 1,222/x
  3. Step 3: Cross multiply
    2,683.80x = 4,023.22 × 1,222
  4. Step 4: Simplify right side
    2,683.80x = 4,916,374.84
  5. Step 5: Solve for x
    x = 4,916,374.84/2,683.80
  6. Step 6: Final answer
    x = 1,831.87

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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.