Home / 5,403.84-8,100-3,860.16

Finding the Fourth Proportional to 5,403.84, 8,100 and 3,860.16

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Solution

The fourth proportional to 5,403.84, 8,100 and 3,860.16 is: 5,786.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,403.84 : 8,100 = 3,860.16 : x
  2. Step 2: Convert to fraction form
    5,403.84/8,100 = 3,860.16/x
  3. Step 3: Cross multiply
    5,403.84x = 8,100 × 3,860.16
  4. Step 4: Simplify right side
    5,403.84x = 31,267,296
  5. Step 5: Solve for x
    x = 31,267,296/5,403.84
  6. Step 6: Final answer
    x = 5,786.13

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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.