Home / 5,215.49-7,821.34-1,516.73

Finding the Fourth Proportional to 5,215.49, 7,821.34 and 1,516.73

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Solution

The fourth proportional to 5,215.49, 7,821.34 and 1,516.73 is: 2,274.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,215.49 : 7,821.34 = 1,516.73 : x
  2. Step 2: Convert to fraction form
    5,215.49/7,821.34 = 1,516.73/x
  3. Step 3: Cross multiply
    5,215.49x = 7,821.34 × 1,516.73
  4. Step 4: Simplify right side
    5,215.49x = 11,862,861.02
  5. Step 5: Solve for x
    x = 11,862,861.02/5,215.49
  6. Step 6: Final answer
    x = 2,274.54

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1.5x scale

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.