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Finding the Fourth Proportional to 4,791.78, 6,613.05 and 2,667.72

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Solution

The fourth proportional to 4,791.78, 6,613.05 and 2,667.72 is: 3,681.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,791.78 : 6,613.05 = 2,667.72 : x
  2. Step 2: Convert to fraction form
    4,791.78/6,613.05 = 2,667.72/x
  3. Step 3: Cross multiply
    4,791.78x = 6,613.05 × 2,667.72
  4. Step 4: Simplify right side
    4,791.78x = 17,641,765.75
  5. Step 5: Solve for x
    x = 17,641,765.75/4,791.78
  6. Step 6: Final answer
    x = 3,681.67

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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.