Home / 1,720.48-2,581.20-624.80

Finding the Fourth Proportional to 1,720.48, 2,581.20 and 624.80

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Solution

The fourth proportional to 1,720.48, 2,581.20 and 624.80 is: 937.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,720.48 : 2,581.20 = 624.80 : x
  2. Step 2: Convert to fraction form
    1,720.48/2,581.20 = 624.80/x
  3. Step 3: Cross multiply
    1,720.48x = 2,581.20 × 624.80
  4. Step 4: Simplify right side
    1,720.48x = 1,612,733.76
  5. Step 5: Solve for x
    x = 1,612,733.76/1,720.48
  6. Step 6: Final answer
    x = 937.37

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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.