Home / 2,529.20-3,793.80-2,421.20

Finding the Fourth Proportional to 2,529.20, 3,793.80 and 2,421.20

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Solution

The fourth proportional to 2,529.20, 3,793.80 and 2,421.20 is: 3,631.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,529.20 : 3,793.80 = 2,421.20 : x
  2. Step 2: Convert to fraction form
    2,529.20/3,793.80 = 2,421.20/x
  3. Step 3: Cross multiply
    2,529.20x = 3,793.80 × 2,421.20
  4. Step 4: Simplify right side
    2,529.20x = 9,185,548.56
  5. Step 5: Solve for x
    x = 9,185,548.56/2,529.20
  6. Step 6: Final answer
    x = 3,631.80

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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.