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Finding the Fourth Proportional to 10,394.50, 14,344.73 and 5,679.09

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Solution

The fourth proportional to 10,394.50, 14,344.73 and 5,679.09 is: 7,837.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,394.50 : 14,344.73 = 5,679.09 : x
  2. Step 2: Convert to fraction form
    10,394.50/14,344.73 = 5,679.09/x
  3. Step 3: Cross multiply
    10,394.50x = 14,344.73 × 5,679.09
  4. Step 4: Simplify right side
    10,394.50x = 81,465,012.70
  5. Step 5: Solve for x
    x = 81,465,012.70/10,394.50
  6. Step 6: Final answer
    x = 7,837.32

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1.5x scale

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.