Home / 2,529.12-3,790.80-1,227.60

Finding the Fourth Proportional to 2,529.12, 3,790.80 and 1,227.60

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Solution

The fourth proportional to 2,529.12, 3,790.80 and 1,227.60 is: 1,840.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,529.12 : 3,790.80 = 1,227.60 : x
  2. Step 2: Convert to fraction form
    2,529.12/3,790.80 = 1,227.60/x
  3. Step 3: Cross multiply
    2,529.12x = 3,790.80 × 1,227.60
  4. Step 4: Simplify right side
    2,529.12x = 4,653,586.08
  5. Step 5: Solve for x
    x = 4,653,586.08/2,529.12
  6. Step 6: Final answer
    x = 1,840.00

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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.