Home / 3,123.30-4,672.80-2,029.80

Finding the Fourth Proportional to 3,123.30, 4,672.80 and 2,029.80

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Solution

The fourth proportional to 3,123.30, 4,672.80 and 2,029.80 is: 3,036.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,123.30 : 4,672.80 = 2,029.80 : x
  2. Step 2: Convert to fraction form
    3,123.30/4,672.80 = 2,029.80/x
  3. Step 3: Cross multiply
    3,123.30x = 4,672.80 × 2,029.80
  4. Step 4: Simplify right side
    3,123.30x = 9,484,849.44
  5. Step 5: Solve for x
    x = 9,484,849.44/3,123.30
  6. Step 6: Final answer
    x = 3,036.80

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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.