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Finding the Fourth Proportional to 7,428.63, 11,146.02 and 3,477

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Solution

The fourth proportional to 7,428.63, 11,146.02 and 3,477 is: 5,216.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,428.63 : 11,146.02 = 3,477 : x
  2. Step 2: Convert to fraction form
    7,428.63/11,146.02 = 3,477/x
  3. Step 3: Cross multiply
    7,428.63x = 11,146.02 × 3,477
  4. Step 4: Simplify right side
    7,428.63x = 38,754,711.54
  5. Step 5: Solve for x
    x = 38,754,711.54/7,428.63
  6. Step 6: Final answer
    x = 5,216.94

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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.