Home / 7,720.20-11,580.30-2,526.60

Finding the Fourth Proportional to 7,720.20, 11,580.30 and 2,526.60

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Solution

The fourth proportional to 7,720.20, 11,580.30 and 2,526.60 is: 3,789.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,720.20 : 11,580.30 = 2,526.60 : x
  2. Step 2: Convert to fraction form
    7,720.20/11,580.30 = 2,526.60/x
  3. Step 3: Cross multiply
    7,720.20x = 11,580.30 × 2,526.60
  4. Step 4: Simplify right side
    7,720.20x = 29,258,785.98
  5. Step 5: Solve for x
    x = 29,258,785.98/7,720.20
  6. Step 6: Final answer
    x = 3,789.90

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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.