Home / 5,178.96-7,718.47-5,170.73

Finding the Fourth Proportional to 5,178.96, 7,718.47 and 5,170.73

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Solution

The fourth proportional to 5,178.96, 7,718.47 and 5,170.73 is: 7,706.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,178.96 : 7,718.47 = 5,170.73 : x
  2. Step 2: Convert to fraction form
    5,178.96/7,718.47 = 5,170.73/x
  3. Step 3: Cross multiply
    5,178.96x = 7,718.47 × 5,170.73
  4. Step 4: Simplify right side
    5,178.96x = 39,910,072.86
  5. Step 5: Solve for x
    x = 39,910,072.86/5,178.96
  6. Step 6: Final answer
    x = 7,706.19

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.