Home / 7,811.55-11,720.25-4,650.81

Finding the Fourth Proportional to 7,811.55, 11,720.25 and 4,650.81

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Solution

The fourth proportional to 7,811.55, 11,720.25 and 4,650.81 is: 6,977.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,811.55 : 11,720.25 = 4,650.81 : x
  2. Step 2: Convert to fraction form
    7,811.55/11,720.25 = 4,650.81/x
  3. Step 3: Cross multiply
    7,811.55x = 11,720.25 × 4,650.81
  4. Step 4: Simplify right side
    7,811.55x = 54,508,655.90
  5. Step 5: Solve for x
    x = 54,508,655.90/7,811.55
  6. Step 6: Final answer
    x = 6,977.96

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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.