Home / 7,715.72-11,564.47-3,327.75

Finding the Fourth Proportional to 7,715.72, 11,564.47 and 3,327.75

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Solution

The fourth proportional to 7,715.72, 11,564.47 and 3,327.75 is: 4,987.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,715.72 : 11,564.47 = 3,327.75 : x
  2. Step 2: Convert to fraction form
    7,715.72/11,564.47 = 3,327.75/x
  3. Step 3: Cross multiply
    7,715.72x = 11,564.47 × 3,327.75
  4. Step 4: Simplify right side
    7,715.72x = 38,483,669.20
  5. Step 5: Solve for x
    x = 38,483,669.20/7,715.72
  6. Step 6: Final answer
    x = 4,987.69

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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.