Home / 3,785.76-5,220.72-3,225.60

Finding the Fourth Proportional to 3,785.76, 5,220.72 and 3,225.60

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Solution

The fourth proportional to 3,785.76, 5,220.72 and 3,225.60 is: 4,448.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,785.76 : 5,220.72 = 3,225.60 : x
  2. Step 2: Convert to fraction form
    3,785.76/5,220.72 = 3,225.60/x
  3. Step 3: Cross multiply
    3,785.76x = 5,220.72 × 3,225.60
  4. Step 4: Simplify right side
    3,785.76x = 16,839,954.43
  5. Step 5: Solve for x
    x = 16,839,954.43/3,785.76
  6. Step 6: Final answer
    x = 4,448.24

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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.