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Finding the Fourth Proportional to 5,326.36, 7,984.37 and 2,987.48

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Solution

The fourth proportional to 5,326.36, 7,984.37 and 2,987.48 is: 4,478.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,326.36 : 7,984.37 = 2,987.48 : x
  2. Step 2: Convert to fraction form
    5,326.36/7,984.37 = 2,987.48/x
  3. Step 3: Cross multiply
    5,326.36x = 7,984.37 × 2,987.48
  4. Step 4: Simplify right side
    5,326.36x = 23,853,173.12
  5. Step 5: Solve for x
    x = 23,853,173.12/5,326.36
  6. Step 6: Final answer
    x = 4,478.33

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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.