Home / 3,123.03-4,311.51-2,129.77

Finding the Fourth Proportional to 3,123.03, 4,311.51 and 2,129.77

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Solution

The fourth proportional to 3,123.03, 4,311.51 and 2,129.77 is: 2,940.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,123.03 : 4,311.51 = 2,129.77 : x
  2. Step 2: Convert to fraction form
    3,123.03/4,311.51 = 2,129.77/x
  3. Step 3: Cross multiply
    3,123.03x = 4,311.51 × 2,129.77
  4. Step 4: Simplify right side
    3,123.03x = 9,182,524.65
  5. Step 5: Solve for x
    x = 9,182,524.65/3,123.03
  6. Step 6: Final answer
    x = 2,940.26

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.