Home / 1,720.45-2,581.92-624.90

Finding the Fourth Proportional to 1,720.45, 2,581.92 and 624.90

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Solution

The fourth proportional to 1,720.45, 2,581.92 and 624.90 is: 937.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,720.45 : 2,581.92 = 624.90 : x
  2. Step 2: Convert to fraction form
    1,720.45/2,581.92 = 624.90/x
  3. Step 3: Cross multiply
    1,720.45x = 2,581.92 × 624.90
  4. Step 4: Simplify right side
    1,720.45x = 1,613,435.35
  5. Step 5: Solve for x
    x = 1,613,435.35/1,720.45
  6. Step 6: Final answer
    x = 937.80

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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.