Home / 4,989.30-7,472.88-3,228.64

Finding the Fourth Proportional to 4,989.30, 7,472.88 and 3,228.64

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Solution

The fourth proportional to 4,989.30, 7,472.88 and 3,228.64 is: 4,835.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,989.30 : 7,472.88 = 3,228.64 : x
  2. Step 2: Convert to fraction form
    4,989.30/7,472.88 = 3,228.64/x
  3. Step 3: Cross multiply
    4,989.30x = 7,472.88 × 3,228.64
  4. Step 4: Simplify right side
    4,989.30x = 24,127,239.28
  5. Step 5: Solve for x
    x = 24,127,239.28/4,989.30
  6. Step 6: Final answer
    x = 4,835.80

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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.