Home / 3,115.19-4,298.76-1,787.96

Finding the Fourth Proportional to 3,115.19, 4,298.76 and 1,787.96

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Solution

The fourth proportional to 3,115.19, 4,298.76 and 1,787.96 is: 2,467.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,115.19 : 4,298.76 = 1,787.96 : x
  2. Step 2: Convert to fraction form
    3,115.19/4,298.76 = 1,787.96/x
  3. Step 3: Cross multiply
    3,115.19x = 4,298.76 × 1,787.96
  4. Step 4: Simplify right side
    3,115.19x = 7,686,010.93
  5. Step 5: Solve for x
    x = 7,686,010.93/3,115.19
  6. Step 6: Final answer
    x = 2,467.27

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Why These Related Problems?

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