Home / 5,431.84-8,150.48-2,147.28

Finding the Fourth Proportional to 5,431.84, 8,150.48 and 2,147.28

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Solution

The fourth proportional to 5,431.84, 8,150.48 and 2,147.28 is: 3,222.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,431.84 : 8,150.48 = 2,147.28 : x
  2. Step 2: Convert to fraction form
    5,431.84/8,150.48 = 2,147.28/x
  3. Step 3: Cross multiply
    5,431.84x = 8,150.48 × 2,147.28
  4. Step 4: Simplify right side
    5,431.84x = 17,501,362.69
  5. Step 5: Solve for x
    x = 17,501,362.69/5,431.84
  6. Step 6: Final answer
    x = 3,222.00

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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.