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Finding the Fourth Proportional to 1,784.61, 2,677.39 and 745.09

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Solution

The fourth proportional to 1,784.61, 2,677.39 and 745.09 is: 1,117.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,784.61 : 2,677.39 = 745.09 : x
  2. Step 2: Convert to fraction form
    1,784.61/2,677.39 = 745.09/x
  3. Step 3: Cross multiply
    1,784.61x = 2,677.39 × 745.09
  4. Step 4: Simplify right side
    1,784.61x = 1,994,887.96
  5. Step 5: Solve for x
    x = 1,994,887.96/1,784.61
  6. Step 6: Final answer
    x = 1,117.83

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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.