Home / 2,887.92-3,985.12-1,692.72

Finding the Fourth Proportional to 2,887.92, 3,985.12 and 1,692.72

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Solution

The fourth proportional to 2,887.92, 3,985.12 and 1,692.72 is: 2,335.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,887.92 : 3,985.12 = 1,692.72 : x
  2. Step 2: Convert to fraction form
    2,887.92/3,985.12 = 1,692.72/x
  3. Step 3: Cross multiply
    2,887.92x = 3,985.12 × 1,692.72
  4. Step 4: Simplify right side
    2,887.92x = 6,745,692.33
  5. Step 5: Solve for x
    x = 6,745,692.33/2,887.92
  6. Step 6: Final answer
    x = 2,335.83

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.