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Finding the Fourth Proportional to 9,305.07, 13,944.28 and 7,215.29

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Solution

The fourth proportional to 9,305.07, 13,944.28 and 7,215.29 is: 10,812.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,305.07 : 13,944.28 = 7,215.29 : x
  2. Step 2: Convert to fraction form
    9,305.07/13,944.28 = 7,215.29/x
  3. Step 3: Cross multiply
    9,305.07x = 13,944.28 × 7,215.29
  4. Step 4: Simplify right side
    9,305.07x = 100,611,936.28
  5. Step 5: Solve for x
    x = 100,611,936.28/9,305.07
  6. Step 6: Final answer
    x = 10,812.59

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1.5x scale

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.