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Finding the Fourth Proportional to 5,516.71, 8,278.14 and 1,819.99

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Solution

The fourth proportional to 5,516.71, 8,278.14 and 1,819.99 is: 2,731.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,516.71 : 8,278.14 = 1,819.99 : x
  2. Step 2: Convert to fraction form
    5,516.71/8,278.14 = 1,819.99/x
  3. Step 3: Cross multiply
    5,516.71x = 8,278.14 × 1,819.99
  4. Step 4: Simplify right side
    5,516.71x = 15,066,159.68
  5. Step 5: Solve for x
    x = 15,066,159.68/5,516.71
  6. Step 6: Final answer
    x = 2,731.01

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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.