Home / 4,905.90-6,770.16-2,667.78

Finding the Fourth Proportional to 4,905.90, 6,770.16 and 2,667.78

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Solution

The fourth proportional to 4,905.90, 6,770.16 and 2,667.78 is: 3,681.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,905.90 : 6,770.16 = 2,667.78 : x
  2. Step 2: Convert to fraction form
    4,905.90/6,770.16 = 2,667.78/x
  3. Step 3: Cross multiply
    4,905.90x = 6,770.16 × 2,667.78
  4. Step 4: Simplify right side
    4,905.90x = 18,061,297.44
  5. Step 5: Solve for x
    x = 18,061,297.44/4,905.90
  6. Step 6: Final answer
    x = 3,681.55

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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.