Home / 5,155-7,733.82-1,692.28

Finding the Fourth Proportional to 5,155, 7,733.82 and 1,692.28

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Solution

The fourth proportional to 5,155, 7,733.82 and 1,692.28 is: 2,538.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,155 : 7,733.82 = 1,692.28 : x
  2. Step 2: Convert to fraction form
    5,155/7,733.82 = 1,692.28/x
  3. Step 3: Cross multiply
    5,155x = 7,733.82 × 1,692.28
  4. Step 4: Simplify right side
    5,155x = 13,087,788.91
  5. Step 5: Solve for x
    x = 13,087,788.91/5,155
  6. Step 6: Final answer
    x = 2,538.85

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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.