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Finding the Fourth Proportional to 3,175.80, 4,763.70 and 2,519.70

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Solution

The fourth proportional to 3,175.80, 4,763.70 and 2,519.70 is: 3,779.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,175.80 : 4,763.70 = 2,519.70 : x
  2. Step 2: Convert to fraction form
    3,175.80/4,763.70 = 2,519.70/x
  3. Step 3: Cross multiply
    3,175.80x = 4,763.70 × 2,519.70
  4. Step 4: Simplify right side
    3,175.80x = 12,003,094.89
  5. Step 5: Solve for x
    x = 12,003,094.89/3,175.80
  6. Step 6: Final answer
    x = 3,779.55

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.