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Finding the Fourth Proportional to 1,860.84, 2,791.26 and 628.25

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Solution

The fourth proportional to 1,860.84, 2,791.26 and 628.25 is: 942.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,860.84 : 2,791.26 = 628.25 : x
  2. Step 2: Convert to fraction form
    1,860.84/2,791.26 = 628.25/x
  3. Step 3: Cross multiply
    1,860.84x = 2,791.26 × 628.25
  4. Step 4: Simplify right side
    1,860.84x = 1,753,609.10
  5. Step 5: Solve for x
    x = 1,753,609.10/1,860.84
  6. Step 6: Final answer
    x = 942.38

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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.