Home / 3,429.28-4,729.80-2,420.56

Finding the Fourth Proportional to 3,429.28, 4,729.80 and 2,420.56

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Solution

The fourth proportional to 3,429.28, 4,729.80 and 2,420.56 is: 3,338.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,429.28 : 4,729.80 = 2,420.56 : x
  2. Step 2: Convert to fraction form
    3,429.28/4,729.80 = 2,420.56/x
  3. Step 3: Cross multiply
    3,429.28x = 4,729.80 × 2,420.56
  4. Step 4: Simplify right side
    3,429.28x = 11,448,764.69
  5. Step 5: Solve for x
    x = 11,448,764.69/3,429.28
  6. Step 6: Final answer
    x = 3,338.53

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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.