Home / 3,175.20-4,756.50-2,117.76

Finding the Fourth Proportional to 3,175.20, 4,756.50 and 2,117.76

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Solution

The fourth proportional to 3,175.20, 4,756.50 and 2,117.76 is: 3,172.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,175.20 : 4,756.50 = 2,117.76 : x
  2. Step 2: Convert to fraction form
    3,175.20/4,756.50 = 2,117.76/x
  3. Step 3: Cross multiply
    3,175.20x = 4,756.50 × 2,117.76
  4. Step 4: Simplify right side
    3,175.20x = 10,073,125.44
  5. Step 5: Solve for x
    x = 10,073,125.44/3,175.20
  6. Step 6: Final answer
    x = 3,172.44

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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.