Home / 1,580.33-2,180.67-917.04

Finding the Fourth Proportional to 1,580.33, 2,180.67 and 917.04

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Solution

The fourth proportional to 1,580.33, 2,180.67 and 917.04 is: 1,265.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,580.33 : 2,180.67 = 917.04 : x
  2. Step 2: Convert to fraction form
    1,580.33/2,180.67 = 917.04/x
  3. Step 3: Cross multiply
    1,580.33x = 2,180.67 × 917.04
  4. Step 4: Simplify right side
    1,580.33x = 1,999,761.62
  5. Step 5: Solve for x
    x = 1,999,761.62/1,580.33
  6. Step 6: Final answer
    x = 1,265.41

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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.