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Finding the Fourth Proportional to 1,890.69, 2,832.25 and 966.21

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Solution

The fourth proportional to 1,890.69, 2,832.25 and 966.21 is: 1,447.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,890.69 : 2,832.25 = 966.21 : x
  2. Step 2: Convert to fraction form
    1,890.69/2,832.25 = 966.21/x
  3. Step 3: Cross multiply
    1,890.69x = 2,832.25 × 966.21
  4. Step 4: Simplify right side
    1,890.69x = 2,736,548.27
  5. Step 5: Solve for x
    x = 2,736,548.27/1,890.69
  6. Step 6: Final answer
    x = 1,447.38

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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.