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Finding the Fourth Proportional to 8,673.40, 13,001.90 and 7,903

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Solution

The fourth proportional to 8,673.40, 13,001.90 and 7,903 is: 11,847.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,673.40 : 13,001.90 = 7,903 : x
  2. Step 2: Convert to fraction form
    8,673.40/13,001.90 = 7,903/x
  3. Step 3: Cross multiply
    8,673.40x = 13,001.90 × 7,903
  4. Step 4: Simplify right side
    8,673.40x = 102,754,015.70
  5. Step 5: Solve for x
    x = 102,754,015.70/8,673.40
  6. Step 6: Final answer
    x = 11,847.03

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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.