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Finding the Fourth Proportional to 8,771.79, 13,157.69 and 2,615.79

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Solution

The fourth proportional to 8,771.79, 13,157.69 and 2,615.79 is: 3,923.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,771.79 : 13,157.69 = 2,615.79 : x
  2. Step 2: Convert to fraction form
    8,771.79/13,157.69 = 2,615.79/x
  3. Step 3: Cross multiply
    8,771.79x = 13,157.69 × 2,615.79
  4. Step 4: Simplify right side
    8,771.79x = 34,417,740.85
  5. Step 5: Solve for x
    x = 34,417,740.85/8,771.79
  6. Step 6: Final answer
    x = 3,923.69

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Similar ratio
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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.