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Finding the Fourth Proportional to 4,305.98, 5,945.55 and 3,309.68

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Solution

The fourth proportional to 4,305.98, 5,945.55 and 3,309.68 is: 4,569.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,305.98 : 5,945.55 = 3,309.68 : x
  2. Step 2: Convert to fraction form
    4,305.98/5,945.55 = 3,309.68/x
  3. Step 3: Cross multiply
    4,305.98x = 5,945.55 × 3,309.68
  4. Step 4: Simplify right side
    4,305.98x = 19,677,867.92
  5. Step 5: Solve for x
    x = 19,677,867.92/4,305.98
  6. Step 6: Final answer
    x = 4,569.89

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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.