Home / 7,861.60-11,791.62-2,667.40

Finding the Fourth Proportional to 7,861.60, 11,791.62 and 2,667.40

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Solution

The fourth proportional to 7,861.60, 11,791.62 and 2,667.40 is: 4,000.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,861.60 : 11,791.62 = 2,667.40 : x
  2. Step 2: Convert to fraction form
    7,861.60/11,791.62 = 2,667.40/x
  3. Step 3: Cross multiply
    7,861.60x = 11,791.62 × 2,667.40
  4. Step 4: Simplify right side
    7,861.60x = 31,452,967.19
  5. Step 5: Solve for x
    x = 31,452,967.19/7,861.60
  6. Step 6: Final answer
    x = 4,000.84

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1.5x scale

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.