Home / 7,821.41-11,730.48-2,887.67

Finding the Fourth Proportional to 7,821.41, 11,730.48 and 2,887.67

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Solution

The fourth proportional to 7,821.41, 11,730.48 and 2,887.67 is: 4,330.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,821.41 : 11,730.48 = 2,887.67 : x
  2. Step 2: Convert to fraction form
    7,821.41/11,730.48 = 2,887.67/x
  3. Step 3: Cross multiply
    7,821.41x = 11,730.48 × 2,887.67
  4. Step 4: Simplify right side
    7,821.41x = 33,873,696.53
  5. Step 5: Solve for x
    x = 33,873,696.53/7,821.41
  6. Step 6: Final answer
    x = 4,330.90

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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.