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Finding the Fourth Proportional to 7,891.95, 10,890.95 and 4,355.29

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Solution

The fourth proportional to 7,891.95, 10,890.95 and 4,355.29 is: 6,010.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,891.95 : 10,890.95 = 4,355.29 : x
  2. Step 2: Convert to fraction form
    7,891.95/10,890.95 = 4,355.29/x
  3. Step 3: Cross multiply
    7,891.95x = 10,890.95 × 4,355.29
  4. Step 4: Simplify right side
    7,891.95x = 47,433,245.63
  5. Step 5: Solve for x
    x = 47,433,245.63/7,891.95
  6. Step 6: Final answer
    x = 6,010.33

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.