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Finding the Fourth Proportional to 2,785.89, 4,178.82 and 733.89

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Solution

The fourth proportional to 2,785.89, 4,178.82 and 733.89 is: 1,100.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,785.89 : 4,178.82 = 733.89 : x
  2. Step 2: Convert to fraction form
    2,785.89/4,178.82 = 733.89/x
  3. Step 3: Cross multiply
    2,785.89x = 4,178.82 × 733.89
  4. Step 4: Simplify right side
    2,785.89x = 3,066,794.21
  5. Step 5: Solve for x
    x = 3,066,794.21/2,785.89
  6. Step 6: Final answer
    x = 1,100.83

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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.