Home / 5,412.48-8,100-3,331.68

Finding the Fourth Proportional to 5,412.48, 8,100 and 3,331.68

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Solution

The fourth proportional to 5,412.48, 8,100 and 3,331.68 is: 4,986.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,412.48 : 8,100 = 3,331.68 : x
  2. Step 2: Convert to fraction form
    5,412.48/8,100 = 3,331.68/x
  3. Step 3: Cross multiply
    5,412.48x = 8,100 × 3,331.68
  4. Step 4: Simplify right side
    5,412.48x = 26,986,608
  5. Step 5: Solve for x
    x = 26,986,608/5,412.48
  6. Step 6: Final answer
    x = 4,986.00

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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.