Home / 3,624.96-5,440-1,982.72

Finding the Fourth Proportional to 3,624.96, 5,440 and 1,982.72

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Solution

The fourth proportional to 3,624.96, 5,440 and 1,982.72 is: 2,975.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,624.96 : 5,440 = 1,982.72 : x
  2. Step 2: Convert to fraction form
    3,624.96/5,440 = 1,982.72/x
  3. Step 3: Cross multiply
    3,624.96x = 5,440 × 1,982.72
  4. Step 4: Simplify right side
    3,624.96x = 10,785,996.80
  5. Step 5: Solve for x
    x = 10,785,996.80/3,624.96
  6. Step 6: Final answer
    x = 2,975.48

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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.