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Finding the Fourth Proportional to 8,538.63, 12,813.72 and 2,992.02

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Solution

The fourth proportional to 8,538.63, 12,813.72 and 2,992.02 is: 4,490.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,538.63 : 12,813.72 = 2,992.02 : x
  2. Step 2: Convert to fraction form
    8,538.63/12,813.72 = 2,992.02/x
  3. Step 3: Cross multiply
    8,538.63x = 12,813.72 × 2,992.02
  4. Step 4: Simplify right side
    8,538.63x = 38,338,906.51
  5. Step 5: Solve for x
    x = 38,338,906.51/8,538.63
  6. Step 6: Final answer
    x = 4,490.05

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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.