Home / 3,820.30-5,729.10-1,355.20

Finding the Fourth Proportional to 3,820.30, 5,729.10 and 1,355.20

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Solution

The fourth proportional to 3,820.30, 5,729.10 and 1,355.20 is: 2,032.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,820.30 : 5,729.10 = 1,355.20 : x
  2. Step 2: Convert to fraction form
    3,820.30/5,729.10 = 1,355.20/x
  3. Step 3: Cross multiply
    3,820.30x = 5,729.10 × 1,355.20
  4. Step 4: Simplify right side
    3,820.30x = 7,764,076.32
  5. Step 5: Solve for x
    x = 7,764,076.32/3,820.30
  6. Step 6: Final answer
    x = 2,032.32

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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.