Home / 5,121.54-7,682.97-1,790.46

Finding the Fourth Proportional to 5,121.54, 7,682.97 and 1,790.46

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Solution

The fourth proportional to 5,121.54, 7,682.97 and 1,790.46 is: 2,685.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,121.54 : 7,682.97 = 1,790.46 : x
  2. Step 2: Convert to fraction form
    5,121.54/7,682.97 = 1,790.46/x
  3. Step 3: Cross multiply
    5,121.54x = 7,682.97 × 1,790.46
  4. Step 4: Simplify right side
    5,121.54x = 13,756,050.47
  5. Step 5: Solve for x
    x = 13,756,050.47/5,121.54
  6. Step 6: Final answer
    x = 2,685.92

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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.