Home / 2,519.64-3,780.36-1,220.76

Finding the Fourth Proportional to 2,519.64, 3,780.36 and 1,220.76

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Solution

The fourth proportional to 2,519.64, 3,780.36 and 1,220.76 is: 1,831.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,519.64 : 3,780.36 = 1,220.76 : x
  2. Step 2: Convert to fraction form
    2,519.64/3,780.36 = 1,220.76/x
  3. Step 3: Cross multiply
    2,519.64x = 3,780.36 × 1,220.76
  4. Step 4: Simplify right side
    2,519.64x = 4,614,912.27
  5. Step 5: Solve for x
    x = 4,614,912.27/2,519.64
  6. Step 6: Final answer
    x = 1,831.58

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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.