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Finding the Fourth Proportional to 2,089.50, 3,133.22 and 628.26

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Solution

The fourth proportional to 2,089.50, 3,133.22 and 628.26 is: 942.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,089.50 : 3,133.22 = 628.26 : x
  2. Step 2: Convert to fraction form
    2,089.50/3,133.22 = 628.26/x
  3. Step 3: Cross multiply
    2,089.50x = 3,133.22 × 628.26
  4. Step 4: Simplify right side
    2,089.50x = 1,968,476.80
  5. Step 5: Solve for x
    x = 1,968,476.80/2,089.50
  6. Step 6: Final answer
    x = 942.08

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1.5x scale

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.