Home / 1,580.21-2,180.60-950.61

Finding the Fourth Proportional to 1,580.21, 2,180.60 and 950.61

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Solution

The fourth proportional to 1,580.21, 2,180.60 and 950.61 is: 1,311.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,580.21 : 2,180.60 = 950.61 : x
  2. Step 2: Convert to fraction form
    1,580.21/2,180.60 = 950.61/x
  3. Step 3: Cross multiply
    1,580.21x = 2,180.60 × 950.61
  4. Step 4: Simplify right side
    1,580.21x = 2,072,898.35
  5. Step 5: Solve for x
    x = 2,072,898.35/1,580.21
  6. Step 6: Final answer
    x = 1,311.79

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.