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Finding the Fourth Proportional to 3,397.82, 4,692.15 and 3,213.72

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Solution

The fourth proportional to 3,397.82, 4,692.15 and 3,213.72 is: 4,437.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,397.82 : 4,692.15 = 3,213.72 : x
  2. Step 2: Convert to fraction form
    3,397.82/4,692.15 = 3,213.72/x
  3. Step 3: Cross multiply
    3,397.82x = 4,692.15 × 3,213.72
  4. Step 4: Simplify right side
    3,397.82x = 15,079,256.30
  5. Step 5: Solve for x
    x = 15,079,256.30/3,397.82
  6. Step 6: Final answer
    x = 4,437.93

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1.5x scale

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.