Home / 3,160.24-4,361.88-1,918

Finding the Fourth Proportional to 3,160.24, 4,361.88 and 1,918

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Solution

The fourth proportional to 3,160.24, 4,361.88 and 1,918 is: 2,647.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,160.24 : 4,361.88 = 1,918 : x
  2. Step 2: Convert to fraction form
    3,160.24/4,361.88 = 1,918/x
  3. Step 3: Cross multiply
    3,160.24x = 4,361.88 × 1,918
  4. Step 4: Simplify right side
    3,160.24x = 8,366,085.84
  5. Step 5: Solve for x
    x = 8,366,085.84/3,160.24
  6. Step 6: Final answer
    x = 2,647.29

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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.