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Finding the Fourth Proportional to 4,881.92, 7,319.08 and 2,540.88

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Solution

The fourth proportional to 4,881.92, 7,319.08 and 2,540.88 is: 3,809.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,881.92 : 7,319.08 = 2,540.88 : x
  2. Step 2: Convert to fraction form
    4,881.92/7,319.08 = 2,540.88/x
  3. Step 3: Cross multiply
    4,881.92x = 7,319.08 × 2,540.88
  4. Step 4: Simplify right side
    4,881.92x = 18,596,903.99
  5. Step 5: Solve for x
    x = 18,596,903.99/4,881.92
  6. Step 6: Final answer
    x = 3,809.34

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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.