Home / 7,785.18-11,676.69-2,520.72

Finding the Fourth Proportional to 7,785.18, 11,676.69 and 2,520.72

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Solution

The fourth proportional to 7,785.18, 11,676.69 and 2,520.72 is: 3,780.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,785.18 : 11,676.69 = 2,520.72 : x
  2. Step 2: Convert to fraction form
    7,785.18/11,676.69 = 2,520.72/x
  3. Step 3: Cross multiply
    7,785.18x = 11,676.69 × 2,520.72
  4. Step 4: Simplify right side
    7,785.18x = 29,433,666.02
  5. Step 5: Solve for x
    x = 29,433,666.02/7,785.18
  6. Step 6: Final answer
    x = 3,780.73

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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.