Home / 2,788.29-4,185.14-2,123.96

Finding the Fourth Proportional to 2,788.29, 4,185.14 and 2,123.96

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Solution

The fourth proportional to 2,788.29, 4,185.14 and 2,123.96 is: 3,187.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,788.29 : 4,185.14 = 2,123.96 : x
  2. Step 2: Convert to fraction form
    2,788.29/4,185.14 = 2,123.96/x
  3. Step 3: Cross multiply
    2,788.29x = 4,185.14 × 2,123.96
  4. Step 4: Simplify right side
    2,788.29x = 8,889,038.41
  5. Step 5: Solve for x
    x = 8,889,038.41/2,788.29
  6. Step 6: Final answer
    x = 3,187.99

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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.