Home / 7,881-11,819.34-2,952.60

Finding the Fourth Proportional to 7,881, 11,819.34 and 2,952.60

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Solution

The fourth proportional to 7,881, 11,819.34 and 2,952.60 is: 4,428.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,881 : 11,819.34 = 2,952.60 : x
  2. Step 2: Convert to fraction form
    7,881/11,819.34 = 2,952.60/x
  3. Step 3: Cross multiply
    7,881x = 11,819.34 × 2,952.60
  4. Step 4: Simplify right side
    7,881x = 34,897,783.28
  5. Step 5: Solve for x
    x = 34,897,783.28/7,881
  6. Step 6: Final answer
    x = 4,428.09

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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.