Home / 5,236.48-7,226.49-2,878.78

Finding the Fourth Proportional to 5,236.48, 7,226.49 and 2,878.78

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Solution

The fourth proportional to 5,236.48, 7,226.49 and 2,878.78 is: 3,972.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,236.48 : 7,226.49 = 2,878.78 : x
  2. Step 2: Convert to fraction form
    5,236.48/7,226.49 = 2,878.78/x
  3. Step 3: Cross multiply
    5,236.48x = 7,226.49 × 2,878.78
  4. Step 4: Simplify right side
    5,236.48x = 20,803,474.88
  5. Step 5: Solve for x
    x = 20,803,474.88/5,236.48
  6. Step 6: Final answer
    x = 3,972.80

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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.