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Finding the Fourth Proportional to 1,805.20, 2,692.40 and 1,774

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Solution

The fourth proportional to 1,805.20, 2,692.40 and 1,774 is: 2,645.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,805.20 : 2,692.40 = 1,774 : x
  2. Step 2: Convert to fraction form
    1,805.20/2,692.40 = 1,774/x
  3. Step 3: Cross multiply
    1,805.20x = 2,692.40 × 1,774
  4. Step 4: Simplify right side
    1,805.20x = 4,776,317.60
  5. Step 5: Solve for x
    x = 4,776,317.60/1,805.20
  6. Step 6: Final answer
    x = 2,645.87

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.