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Finding the Fourth Proportional to 3,078.47, 4,611.87 and 1,826.42

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Solution

The fourth proportional to 3,078.47, 4,611.87 and 1,826.42 is: 2,736.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,078.47 : 4,611.87 = 1,826.42 : x
  2. Step 2: Convert to fraction form
    3,078.47/4,611.87 = 1,826.42/x
  3. Step 3: Cross multiply
    3,078.47x = 4,611.87 × 1,826.42
  4. Step 4: Simplify right side
    3,078.47x = 8,423,225.42
  5. Step 5: Solve for x
    x = 8,423,225.42/3,078.47
  6. Step 6: Final answer
    x = 2,736.17

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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.