Home / 5,245.82-7,239.63-2,888.38

Finding the Fourth Proportional to 5,245.82, 7,239.63 and 2,888.38

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Solution

The fourth proportional to 5,245.82, 7,239.63 and 2,888.38 is: 3,986.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,245.82 : 7,239.63 = 2,888.38 : x
  2. Step 2: Convert to fraction form
    5,245.82/7,239.63 = 2,888.38/x
  3. Step 3: Cross multiply
    5,245.82x = 7,239.63 × 2,888.38
  4. Step 4: Simplify right side
    5,245.82x = 20,910,795.23
  5. Step 5: Solve for x
    x = 20,910,795.23/5,245.82
  6. Step 6: Final answer
    x = 3,986.19

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Half 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.