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Finding the Fourth Proportional to 4,881, 7,310.30 and 2,930.92

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Solution

The fourth proportional to 4,881, 7,310.30 and 2,930.92 is: 4,389.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,881 : 7,310.30 = 2,930.92 : x
  2. Step 2: Convert to fraction form
    4,881/7,310.30 = 2,930.92/x
  3. Step 3: Cross multiply
    4,881x = 7,310.30 × 2,930.92
  4. Step 4: Simplify right side
    4,881x = 21,425,904.48
  5. Step 5: Solve for x
    x = 21,425,904.48/4,881
  6. Step 6: Final answer
    x = 4,389.65

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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.