Home / 7,882.76-11,823.60-2,688.50

Finding the Fourth Proportional to 7,882.76, 11,823.60 and 2,688.50

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Solution

The fourth proportional to 7,882.76, 11,823.60 and 2,688.50 is: 4,032.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,882.76 : 11,823.60 = 2,688.50 : x
  2. Step 2: Convert to fraction form
    7,882.76/11,823.60 = 2,688.50/x
  3. Step 3: Cross multiply
    7,882.76x = 11,823.60 × 2,688.50
  4. Step 4: Simplify right side
    7,882.76x = 31,787,748.60
  5. Step 5: Solve for x
    x = 31,787,748.60/7,882.76
  6. Step 6: Final answer
    x = 4,032.57

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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.