Home / 3,824.40-5,729.40-1,969.20

Finding the Fourth Proportional to 3,824.40, 5,729.40 and 1,969.20

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Solution

The fourth proportional to 3,824.40, 5,729.40 and 1,969.20 is: 2,950.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,824.40 : 5,729.40 = 1,969.20 : x
  2. Step 2: Convert to fraction form
    3,824.40/5,729.40 = 1,969.20/x
  3. Step 3: Cross multiply
    3,824.40x = 5,729.40 × 1,969.20
  4. Step 4: Simplify right side
    3,824.40x = 11,282,334.48
  5. Step 5: Solve for x
    x = 11,282,334.48/3,824.40
  6. Step 6: Final answer
    x = 2,950.09

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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.