Home / 5,218.83-7,828.25-3,988.44

Finding the Fourth Proportional to 5,218.83, 7,828.25 and 3,988.44

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Solution

The fourth proportional to 5,218.83, 7,828.25 and 3,988.44 is: 5,982.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,218.83 : 7,828.25 = 3,988.44 : x
  2. Step 2: Convert to fraction form
    5,218.83/7,828.25 = 3,988.44/x
  3. Step 3: Cross multiply
    5,218.83x = 7,828.25 × 3,988.44
  4. Step 4: Simplify right side
    5,218.83x = 31,222,485.49
  5. Step 5: Solve for x
    x = 31,222,485.49/5,218.83
  6. Step 6: Final answer
    x = 5,982.66

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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 (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.