Home / 7,820.88-11,730.10-2,555.85

Finding the Fourth Proportional to 7,820.88, 11,730.10 and 2,555.85

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Solution

The fourth proportional to 7,820.88, 11,730.10 and 2,555.85 is: 3,833.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,820.88 : 11,730.10 = 2,555.85 : x
  2. Step 2: Convert to fraction form
    7,820.88/11,730.10 = 2,555.85/x
  3. Step 3: Cross multiply
    7,820.88x = 11,730.10 × 2,555.85
  4. Step 4: Simplify right side
    7,820.88x = 29,980,427.65
  5. Step 5: Solve for x
    x = 29,980,427.65/7,820.88
  6. Step 6: Final answer
    x = 3,833.38

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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.