Home / 3,802.28-5,247.70-2,742.80

Finding the Fourth Proportional to 3,802.28, 5,247.70 and 2,742.80

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Solution

The fourth proportional to 3,802.28, 5,247.70 and 2,742.80 is: 3,785.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,802.28 : 5,247.70 = 2,742.80 : x
  2. Step 2: Convert to fraction form
    3,802.28/5,247.70 = 2,742.80/x
  3. Step 3: Cross multiply
    3,802.28x = 5,247.70 × 2,742.80
  4. Step 4: Simplify right side
    3,802.28x = 14,393,391.56
  5. Step 5: Solve for x
    x = 14,393,391.56/3,802.28
  6. Step 6: Final answer
    x = 3,785.46

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.