Home / 2,624.40-3,936.48-1,324.88

Finding the Fourth Proportional to 2,624.40, 3,936.48 and 1,324.88

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Solution

The fourth proportional to 2,624.40, 3,936.48 and 1,324.88 is: 1,987.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,624.40 : 3,936.48 = 1,324.88 : x
  2. Step 2: Convert to fraction form
    2,624.40/3,936.48 = 1,324.88/x
  3. Step 3: Cross multiply
    2,624.40x = 3,936.48 × 1,324.88
  4. Step 4: Simplify right side
    2,624.40x = 5,215,363.62
  5. Step 5: Solve for x
    x = 5,215,363.62/2,624.40
  6. Step 6: Final answer
    x = 1,987.26

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1.5x scale

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.