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Finding the Fourth Proportional to 7,001, 9,662.80 and 4,018.89

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Solution

The fourth proportional to 7,001, 9,662.80 and 4,018.89 is: 5,546.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,001 : 9,662.80 = 4,018.89 : x
  2. Step 2: Convert to fraction form
    7,001/9,662.80 = 4,018.89/x
  3. Step 3: Cross multiply
    7,001x = 9,662.80 × 4,018.89
  4. Step 4: Simplify right side
    7,001x = 38,833,730.29
  5. Step 5: Solve for x
    x = 38,833,730.29/7,001
  6. Step 6: Final answer
    x = 5,546.88

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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.