Home / 7,943.76-11,916.32-2,100.38

Finding the Fourth Proportional to 7,943.76, 11,916.32 and 2,100.38

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Solution

The fourth proportional to 7,943.76, 11,916.32 and 2,100.38 is: 3,150.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,943.76 : 11,916.32 = 2,100.38 : x
  2. Step 2: Convert to fraction form
    7,943.76/11,916.32 = 2,100.38/x
  3. Step 3: Cross multiply
    7,943.76x = 11,916.32 × 2,100.38
  4. Step 4: Simplify right side
    7,943.76x = 25,028,730.12
  5. Step 5: Solve for x
    x = 25,028,730.12/7,943.76
  6. Step 6: Final answer
    x = 3,150.74

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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.