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Finding the Fourth Proportional to 5,645.48, 7,789.59 and 3,548.39

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Solution

The fourth proportional to 5,645.48, 7,789.59 and 3,548.39 is: 4,896.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,645.48 : 7,789.59 = 3,548.39 : x
  2. Step 2: Convert to fraction form
    5,645.48/7,789.59 = 3,548.39/x
  3. Step 3: Cross multiply
    5,645.48x = 7,789.59 × 3,548.39
  4. Step 4: Simplify right side
    5,645.48x = 27,640,503.26
  5. Step 5: Solve for x
    x = 27,640,503.26/5,645.48
  6. Step 6: Final answer
    x = 4,896.04

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Double scale
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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.