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Finding the Fourth Proportional to 2,133.76, 3,200.70 and 673.94

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Solution

The fourth proportional to 2,133.76, 3,200.70 and 673.94 is: 1,010.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,133.76 : 3,200.70 = 673.94 : x
  2. Step 2: Convert to fraction form
    2,133.76/3,200.70 = 673.94/x
  3. Step 3: Cross multiply
    2,133.76x = 3,200.70 × 673.94
  4. Step 4: Simplify right side
    2,133.76x = 2,157,079.76
  5. Step 5: Solve for x
    x = 2,157,079.76/2,133.76
  6. Step 6: Final answer
    x = 1,010.93

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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.