Home / 5,236.45-7,226.31-2,878.75

Finding the Fourth Proportional to 5,236.45, 7,226.31 and 2,878.75

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Solution

The fourth proportional to 5,236.45, 7,226.31 and 2,878.75 is: 3,972.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,236.45 : 7,226.31 = 2,878.75 : x
  2. Step 2: Convert to fraction form
    5,236.45/7,226.31 = 2,878.75/x
  3. Step 3: Cross multiply
    5,236.45x = 7,226.31 × 2,878.75
  4. Step 4: Simplify right side
    5,236.45x = 20,802,702.90
  5. Step 5: Solve for x
    x = 20,802,702.90/5,236.45
  6. Step 6: Final answer
    x = 3,972.67

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1.5x scale

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.