Home / 5,207.36-7,811.01-1,311.75

Finding the Fourth Proportional to 5,207.36, 7,811.01 and 1,311.75

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Solution

The fourth proportional to 5,207.36, 7,811.01 and 1,311.75 is: 1,967.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,207.36 : 7,811.01 = 1,311.75 : x
  2. Step 2: Convert to fraction form
    5,207.36/7,811.01 = 1,311.75/x
  3. Step 3: Cross multiply
    5,207.36x = 7,811.01 × 1,311.75
  4. Step 4: Simplify right side
    5,207.36x = 10,246,092.37
  5. Step 5: Solve for x
    x = 10,246,092.37/5,207.36
  6. Step 6: Final answer
    x = 1,967.62

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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.