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Finding the Fourth Proportional to 5,207.70, 7,811.55 and 2,610.03

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Solution

The fourth proportional to 5,207.70, 7,811.55 and 2,610.03 is: 3,915.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,207.70 : 7,811.55 = 2,610.03 : x
  2. Step 2: Convert to fraction form
    5,207.70/7,811.55 = 2,610.03/x
  3. Step 3: Cross multiply
    5,207.70x = 7,811.55 × 2,610.03
  4. Step 4: Simplify right side
    5,207.70x = 20,388,379.85
  5. Step 5: Solve for x
    x = 20,388,379.85/5,207.70
  6. Step 6: Final answer
    x = 3,915.05

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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.