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Finding the Fourth Proportional to 7,200.32, 9,936.60 and 4,013.84

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Solution

The fourth proportional to 7,200.32, 9,936.60 and 4,013.84 is: 5,539.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,200.32 : 9,936.60 = 4,013.84 : x
  2. Step 2: Convert to fraction form
    7,200.32/9,936.60 = 4,013.84/x
  3. Step 3: Cross multiply
    7,200.32x = 9,936.60 × 4,013.84
  4. Step 4: Simplify right side
    7,200.32x = 39,883,922.54
  5. Step 5: Solve for x
    x = 39,883,922.54/7,200.32
  6. Step 6: Final answer
    x = 5,539.19

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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.