Home / 3,415.15-5,122.49-949.99

Finding the Fourth Proportional to 3,415.15, 5,122.49 and 949.99

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Solution

The fourth proportional to 3,415.15, 5,122.49 and 949.99 is: 1,424.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,415.15 : 5,122.49 = 949.99 : x
  2. Step 2: Convert to fraction form
    3,415.15/5,122.49 = 949.99/x
  3. Step 3: Cross multiply
    3,415.15x = 5,122.49 × 949.99
  4. Step 4: Simplify right side
    3,415.15x = 4,866,283.91
  5. Step 5: Solve for x
    x = 4,866,283.91/3,415.15
  6. Step 6: Final answer
    x = 1,424.91

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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.