Home / 3,175.56-4,784.82-2,639.70

Finding the Fourth Proportional to 3,175.56, 4,784.82 and 2,639.70

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Solution

The fourth proportional to 3,175.56, 4,784.82 and 2,639.70 is: 3,977.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,175.56 : 4,784.82 = 2,639.70 : x
  2. Step 2: Convert to fraction form
    3,175.56/4,784.82 = 2,639.70/x
  3. Step 3: Cross multiply
    3,175.56x = 4,784.82 × 2,639.70
  4. Step 4: Simplify right side
    3,175.56x = 12,630,489.35
  5. Step 5: Solve for x
    x = 12,630,489.35/3,175.56
  6. Step 6: Final answer
    x = 3,977.41

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.