Home / 3,115.32-4,677.84-2,976.81

Finding the Fourth Proportional to 3,115.32, 4,677.84 and 2,976.81

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Solution

The fourth proportional to 3,115.32, 4,677.84 and 2,976.81 is: 4,469.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,115.32 : 4,677.84 = 2,976.81 : x
  2. Step 2: Convert to fraction form
    3,115.32/4,677.84 = 2,976.81/x
  3. Step 3: Cross multiply
    3,115.32x = 4,677.84 × 2,976.81
  4. Step 4: Simplify right side
    3,115.32x = 13,925,040.89
  5. Step 5: Solve for x
    x = 13,925,040.89/3,115.32
  6. Step 6: Final answer
    x = 4,469.86

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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.