Home / 5,215.06-7,821.79-1,516.52

Finding the Fourth Proportional to 5,215.06, 7,821.79 and 1,516.52

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Solution

The fourth proportional to 5,215.06, 7,821.79 and 1,516.52 is: 2,274.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,215.06 : 7,821.79 = 1,516.52 : x
  2. Step 2: Convert to fraction form
    5,215.06/7,821.79 = 1,516.52/x
  3. Step 3: Cross multiply
    5,215.06x = 7,821.79 × 1,516.52
  4. Step 4: Simplify right side
    5,215.06x = 11,861,921.00
  5. Step 5: Solve for x
    x = 11,861,921.00/5,215.06
  6. Step 6: Final answer
    x = 2,274.55

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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.