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Finding the Fourth Proportional to 10,886.75, 16,330.21 and 2,678.75

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Solution

The fourth proportional to 10,886.75, 16,330.21 and 2,678.75 is: 4,018.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,886.75 : 16,330.21 = 2,678.75 : x
  2. Step 2: Convert to fraction form
    10,886.75/16,330.21 = 2,678.75/x
  3. Step 3: Cross multiply
    10,886.75x = 16,330.21 × 2,678.75
  4. Step 4: Simplify right side
    10,886.75x = 43,744,536.64
  5. Step 5: Solve for x
    x = 43,744,536.64/10,886.75
  6. Step 6: Final answer
    x = 4,018.14

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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.