Home / 7,820.10-11,730.14-2,629.62

Finding the Fourth Proportional to 7,820.10, 11,730.14 and 2,629.62

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Solution

The fourth proportional to 7,820.10, 11,730.14 and 2,629.62 is: 3,944.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,820.10 : 11,730.14 = 2,629.62 : x
  2. Step 2: Convert to fraction form
    7,820.10/11,730.14 = 2,629.62/x
  3. Step 3: Cross multiply
    7,820.10x = 11,730.14 × 2,629.62
  4. Step 4: Simplify right side
    7,820.10x = 30,845,810.75
  5. Step 5: Solve for x
    x = 30,845,810.75/7,820.10
  6. Step 6: Final answer
    x = 3,944.43

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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.