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Finding the Fourth Proportional to 5,692.72, 8,540.40 and 2,230

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Solution

The fourth proportional to 5,692.72, 8,540.40 and 2,230 is: 3,345.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,692.72 : 8,540.40 = 2,230 : x
  2. Step 2: Convert to fraction form
    5,692.72/8,540.40 = 2,230/x
  3. Step 3: Cross multiply
    5,692.72x = 8,540.40 × 2,230
  4. Step 4: Simplify right side
    5,692.72x = 19,045,092
  5. Step 5: Solve for x
    x = 19,045,092/5,692.72
  6. Step 6: Final answer
    x = 3,345.52

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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.