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Finding the Fourth Proportional to 7,220.37, 9,964.03 and 4,235.63

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Solution

The fourth proportional to 7,220.37, 9,964.03 and 4,235.63 is: 5,845.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,220.37 : 9,964.03 = 4,235.63 : x
  2. Step 2: Convert to fraction form
    7,220.37/9,964.03 = 4,235.63/x
  3. Step 3: Cross multiply
    7,220.37x = 9,964.03 × 4,235.63
  4. Step 4: Simplify right side
    7,220.37x = 42,203,944.39
  5. Step 5: Solve for x
    x = 42,203,944.39/7,220.37
  6. Step 6: Final answer
    x = 5,845.12

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Half scale
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Double scale
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Similar ratio
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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.