Home / 2,372.45-3,558.65-811.70

Finding the Fourth Proportional to 2,372.45, 3,558.65 and 811.70

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Solution

The fourth proportional to 2,372.45, 3,558.65 and 811.70 is: 1,217.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,372.45 : 3,558.65 = 811.70 : x
  2. Step 2: Convert to fraction form
    2,372.45/3,558.65 = 811.70/x
  3. Step 3: Cross multiply
    2,372.45x = 3,558.65 × 811.70
  4. Step 4: Simplify right side
    2,372.45x = 2,888,540.44
  5. Step 5: Solve for x
    x = 2,888,540.44/2,372.45
  6. Step 6: Final answer
    x = 1,217.54

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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.