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Finding the Fourth Proportional to 2,089.83, 3,133.65 and 628.79

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Solution

The fourth proportional to 2,089.83, 3,133.65 and 628.79 is: 942.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,089.83 : 3,133.65 = 628.79 : x
  2. Step 2: Convert to fraction form
    2,089.83/3,133.65 = 628.79/x
  3. Step 3: Cross multiply
    2,089.83x = 3,133.65 × 628.79
  4. Step 4: Simplify right side
    2,089.83x = 1,970,407.78
  5. Step 5: Solve for x
    x = 1,970,407.78/2,089.83
  6. Step 6: Final answer
    x = 942.86

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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.