Home / 1,720.36-2,581.35-624.43

Finding the Fourth Proportional to 1,720.36, 2,581.35 and 624.43

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Solution

The fourth proportional to 1,720.36, 2,581.35 and 624.43 is: 936.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,720.36 : 2,581.35 = 624.43 : x
  2. Step 2: Convert to fraction form
    1,720.36/2,581.35 = 624.43/x
  3. Step 3: Cross multiply
    1,720.36x = 2,581.35 × 624.43
  4. Step 4: Simplify right side
    1,720.36x = 1,611,872.38
  5. Step 5: Solve for x
    x = 1,611,872.38/1,720.36
  6. Step 6: Final answer
    x = 936.94

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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.