Home / 5,120.17-7,679.94-3,012.99

Finding the Fourth Proportional to 5,120.17, 7,679.94 and 3,012.99

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Solution

The fourth proportional to 5,120.17, 7,679.94 and 3,012.99 is: 4,519.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,120.17 : 7,679.94 = 3,012.99 : x
  2. Step 2: Convert to fraction form
    5,120.17/7,679.94 = 3,012.99/x
  3. Step 3: Cross multiply
    5,120.17x = 7,679.94 × 3,012.99
  4. Step 4: Simplify right side
    5,120.17x = 23,139,582.42
  5. Step 5: Solve for x
    x = 23,139,582.42/5,120.17
  6. Step 6: Final answer
    x = 4,519.30

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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.