Home / 5,274.56-7,911.68-2,153.76

Finding the Fourth Proportional to 5,274.56, 7,911.68 and 2,153.76

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Solution

The fourth proportional to 5,274.56, 7,911.68 and 2,153.76 is: 3,230.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,274.56 : 7,911.68 = 2,153.76 : x
  2. Step 2: Convert to fraction form
    5,274.56/7,911.68 = 2,153.76/x
  3. Step 3: Cross multiply
    5,274.56x = 7,911.68 × 2,153.76
  4. Step 4: Simplify right side
    5,274.56x = 17,039,849.15
  5. Step 5: Solve for x
    x = 17,039,849.15/5,274.56
  6. Step 6: Final answer
    x = 3,230.58

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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.