Home / 3,175.26-4,380.47-1,915.60

Finding the Fourth Proportional to 3,175.26, 4,380.47 and 1,915.60

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Solution

The fourth proportional to 3,175.26, 4,380.47 and 1,915.60 is: 2,642.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,175.26 : 4,380.47 = 1,915.60 : x
  2. Step 2: Convert to fraction form
    3,175.26/4,380.47 = 1,915.60/x
  3. Step 3: Cross multiply
    3,175.26x = 4,380.47 × 1,915.60
  4. Step 4: Simplify right side
    3,175.26x = 8,391,228.33
  5. Step 5: Solve for x
    x = 8,391,228.33/3,175.26
  6. Step 6: Final answer
    x = 2,642.69

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1.5x scale

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.