Home / 1,962.22-2,706.10-1,289.42

Finding the Fourth Proportional to 1,962.22, 2,706.10 and 1,289.42

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Solution

The fourth proportional to 1,962.22, 2,706.10 and 1,289.42 is: 1,778.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,962.22 : 2,706.10 = 1,289.42 : x
  2. Step 2: Convert to fraction form
    1,962.22/2,706.10 = 1,289.42/x
  3. Step 3: Cross multiply
    1,962.22x = 2,706.10 × 1,289.42
  4. Step 4: Simplify right side
    1,962.22x = 3,489,299.46
  5. Step 5: Solve for x
    x = 3,489,299.46/1,962.22
  6. Step 6: Final answer
    x = 1,778.24

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.