Home / 3,122.24-4,680.80-1,274.20

Finding the Fourth Proportional to 3,122.24, 4,680.80 and 1,274.20

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Solution

The fourth proportional to 3,122.24, 4,680.80 and 1,274.20 is: 1,910.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,122.24 : 4,680.80 = 1,274.20 : x
  2. Step 2: Convert to fraction form
    3,122.24/4,680.80 = 1,274.20/x
  3. Step 3: Cross multiply
    3,122.24x = 4,680.80 × 1,274.20
  4. Step 4: Simplify right side
    3,122.24x = 5,964,275.36
  5. Step 5: Solve for x
    x = 5,964,275.36/3,122.24
  6. Step 6: Final answer
    x = 1,910.26

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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.