Home / 3,205.68-4,807.20-1,125.24

Finding the Fourth Proportional to 3,205.68, 4,807.20 and 1,125.24

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Solution

The fourth proportional to 3,205.68, 4,807.20 and 1,125.24 is: 1,687.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,205.68 : 4,807.20 = 1,125.24 : x
  2. Step 2: Convert to fraction form
    3,205.68/4,807.20 = 1,125.24/x
  3. Step 3: Cross multiply
    3,205.68x = 4,807.20 × 1,125.24
  4. Step 4: Simplify right side
    3,205.68x = 5,409,253.73
  5. Step 5: Solve for x
    x = 5,409,253.73/3,205.68
  6. Step 6: Final answer
    x = 1,687.40

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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.