Home / 7,115.40-10,665-2,730.96

Finding the Fourth Proportional to 7,115.40, 10,665 and 2,730.96

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Solution

The fourth proportional to 7,115.40, 10,665 and 2,730.96 is: 4,093.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,115.40 : 10,665 = 2,730.96 : x
  2. Step 2: Convert to fraction form
    7,115.40/10,665 = 2,730.96/x
  3. Step 3: Cross multiply
    7,115.40x = 10,665 × 2,730.96
  4. Step 4: Simplify right side
    7,115.40x = 29,125,688.40
  5. Step 5: Solve for x
    x = 29,125,688.40/7,115.40
  6. Step 6: Final answer
    x = 4,093.33

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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.