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Finding the Fourth Proportional to 1,923.65, 2,884.77 and 690.73

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Solution

The fourth proportional to 1,923.65, 2,884.77 and 690.73 is: 1,035.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,923.65 : 2,884.77 = 690.73 : x
  2. Step 2: Convert to fraction form
    1,923.65/2,884.77 = 690.73/x
  3. Step 3: Cross multiply
    1,923.65x = 2,884.77 × 690.73
  4. Step 4: Simplify right side
    1,923.65x = 1,992,600.79
  5. Step 5: Solve for x
    x = 1,992,600.79/1,923.65
  6. Step 6: Final answer
    x = 1,035.84

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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.