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Finding the Fourth Proportional to 9,112, 13,670.16 and 2,956

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Solution

The fourth proportional to 9,112, 13,670.16 and 2,956 is: 4,434.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,112 : 13,670.16 = 2,956 : x
  2. Step 2: Convert to fraction form
    9,112/13,670.16 = 2,956/x
  3. Step 3: Cross multiply
    9,112x = 13,670.16 × 2,956
  4. Step 4: Simplify right side
    9,112x = 40,408,992.96
  5. Step 5: Solve for x
    x = 40,408,992.96/9,112
  6. Step 6: Final answer
    x = 4,434.70

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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.