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Finding the Fourth Proportional to 4,266.70, 6,394.05 and 3,390.70

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Solution

The fourth proportional to 4,266.70, 6,394.05 and 3,390.70 is: 5,081.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,266.70 : 6,394.05 = 3,390.70 : x
  2. Step 2: Convert to fraction form
    4,266.70/6,394.05 = 3,390.70/x
  3. Step 3: Cross multiply
    4,266.70x = 6,394.05 × 3,390.70
  4. Step 4: Simplify right side
    4,266.70x = 21,680,305.34
  5. Step 5: Solve for x
    x = 21,680,305.34/4,266.70
  6. Step 6: Final answer
    x = 5,081.28

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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.