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Finding the Fourth Proportional to 1,789.67, 2,685.48 and 694.07

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Solution

The fourth proportional to 1,789.67, 2,685.48 and 694.07 is: 1,041.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,789.67 : 2,685.48 = 694.07 : x
  2. Step 2: Convert to fraction form
    1,789.67/2,685.48 = 694.07/x
  3. Step 3: Cross multiply
    1,789.67x = 2,685.48 × 694.07
  4. Step 4: Simplify right side
    1,789.67x = 1,863,907.63
  5. Step 5: Solve for x
    x = 1,863,907.63/1,789.67
  6. Step 6: Final answer
    x = 1,041.48

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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.