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Finding the Fourth Proportional to 1,786.33, 2,678.35 and 746.06

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Solution

The fourth proportional to 1,786.33, 2,678.35 and 746.06 is: 1,118.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,786.33 : 2,678.35 = 746.06 : x
  2. Step 2: Convert to fraction form
    1,786.33/2,678.35 = 746.06/x
  3. Step 3: Cross multiply
    1,786.33x = 2,678.35 × 746.06
  4. Step 4: Simplify right side
    1,786.33x = 1,998,202.14
  5. Step 5: Solve for x
    x = 1,998,202.14/1,786.33
  6. Step 6: Final answer
    x = 1,118.60

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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.