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Finding the Fourth Proportional to 7,200.00, 9,936.09 and 4,013.21

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Solution

The fourth proportional to 7,200.00, 9,936.09 and 4,013.21 is: 5,538.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,200.00 : 9,936.09 = 4,013.21 : x
  2. Step 2: Convert to fraction form
    7,200.00/9,936.09 = 4,013.21/x
  3. Step 3: Cross multiply
    7,200.00x = 9,936.09 × 4,013.21
  4. Step 4: Simplify right side
    7,200.00x = 39,875,581.12
  5. Step 5: Solve for x
    x = 39,875,581.12/7,200.00
  6. Step 6: Final answer
    x = 5,538.28

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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.