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Finding the Fourth Proportional to 1,786.02, 2,678.82 and 745.39

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Solution

The fourth proportional to 1,786.02, 2,678.82 and 745.39 is: 1,118.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,786.02 : 2,678.82 = 745.39 : x
  2. Step 2: Convert to fraction form
    1,786.02/2,678.82 = 745.39/x
  3. Step 3: Cross multiply
    1,786.02x = 2,678.82 × 745.39
  4. Step 4: Simplify right side
    1,786.02x = 1,996,765.64
  5. Step 5: Solve for x
    x = 1,996,765.64/1,786.02
  6. Step 6: Final answer
    x = 1,118.00

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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.