Home / 1,720.36-2,581.56-624.81

Finding the Fourth Proportional to 1,720.36, 2,581.56 and 624.81

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Solution

The fourth proportional to 1,720.36, 2,581.56 and 624.81 is: 937.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,720.36 : 2,581.56 = 624.81 : x
  2. Step 2: Convert to fraction form
    1,720.36/2,581.56 = 624.81/x
  3. Step 3: Cross multiply
    1,720.36x = 2,581.56 × 624.81
  4. Step 4: Simplify right side
    1,720.36x = 1,612,984.50
  5. Step 5: Solve for x
    x = 1,612,984.50/1,720.36
  6. Step 6: Final answer
    x = 937.59

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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.