Home / 5,115.56-7,674.75-2,153.28

Finding the Fourth Proportional to 5,115.56, 7,674.75 and 2,153.28

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Solution

The fourth proportional to 5,115.56, 7,674.75 and 2,153.28 is: 3,230.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,115.56 : 7,674.75 = 2,153.28 : x
  2. Step 2: Convert to fraction form
    5,115.56/7,674.75 = 2,153.28/x
  3. Step 3: Cross multiply
    5,115.56x = 7,674.75 × 2,153.28
  4. Step 4: Simplify right side
    5,115.56x = 16,525,914.46
  5. Step 5: Solve for x
    x = 16,525,914.46/5,115.56
  6. Step 6: Final answer
    x = 3,230.52

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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.