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Finding the Fourth Proportional to 7,257.08, 10,886.88 and 2,639

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Solution

The fourth proportional to 7,257.08, 10,886.88 and 2,639 is: 3,958.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,257.08 : 10,886.88 = 2,639 : x
  2. Step 2: Convert to fraction form
    7,257.08/10,886.88 = 2,639/x
  3. Step 3: Cross multiply
    7,257.08x = 10,886.88 × 2,639
  4. Step 4: Simplify right side
    7,257.08x = 28,730,476.32
  5. Step 5: Solve for x
    x = 28,730,476.32/7,257.08
  6. Step 6: Final answer
    x = 3,958.96

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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.