Home / 5,261.20-7,885.83-2,658.64

Finding the Fourth Proportional to 5,261.20, 7,885.83 and 2,658.64

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Solution

The fourth proportional to 5,261.20, 7,885.83 and 2,658.64 is: 3,984.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,261.20 : 7,885.83 = 2,658.64 : x
  2. Step 2: Convert to fraction form
    5,261.20/7,885.83 = 2,658.64/x
  3. Step 3: Cross multiply
    5,261.20x = 7,885.83 × 2,658.64
  4. Step 4: Simplify right side
    5,261.20x = 20,965,583.07
  5. Step 5: Solve for x
    x = 20,965,583.07/5,261.20
  6. Step 6: Final answer
    x = 3,984.94

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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.