Home / 3,211.90-4,819.20-1,752.10

Finding the Fourth Proportional to 3,211.90, 4,819.20 and 1,752.10

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Solution

The fourth proportional to 3,211.90, 4,819.20 and 1,752.10 is: 2,628.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,211.90 : 4,819.20 = 1,752.10 : x
  2. Step 2: Convert to fraction form
    3,211.90/4,819.20 = 1,752.10/x
  3. Step 3: Cross multiply
    3,211.90x = 4,819.20 × 1,752.10
  4. Step 4: Simplify right side
    3,211.90x = 8,443,720.32
  5. Step 5: Solve for x
    x = 8,443,720.32/3,211.90
  6. Step 6: Final answer
    x = 2,628.89

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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.