Home / 5,410.80-8,116.22-1,515.20

Finding the Fourth Proportional to 5,410.80, 8,116.22 and 1,515.20

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Solution

The fourth proportional to 5,410.80, 8,116.22 and 1,515.20 is: 2,272.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,410.80 : 8,116.22 = 1,515.20 : x
  2. Step 2: Convert to fraction form
    5,410.80/8,116.22 = 1,515.20/x
  3. Step 3: Cross multiply
    5,410.80x = 8,116.22 × 1,515.20
  4. Step 4: Simplify right side
    5,410.80x = 12,297,696.54
  5. Step 5: Solve for x
    x = 12,297,696.54/5,410.80
  6. Step 6: Final answer
    x = 2,272.81

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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.