Home / 3,211.90-4,819.20-1,567.60

Finding the Fourth Proportional to 3,211.90, 4,819.20 and 1,567.60

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Solution

The fourth proportional to 3,211.90, 4,819.20 and 1,567.60 is: 2,352.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,211.90 : 4,819.20 = 1,567.60 : x
  2. Step 2: Convert to fraction form
    3,211.90/4,819.20 = 1,567.60/x
  3. Step 3: Cross multiply
    3,211.90x = 4,819.20 × 1,567.60
  4. Step 4: Simplify right side
    3,211.90x = 7,554,577.92
  5. Step 5: Solve for x
    x = 7,554,577.92/3,211.90
  6. Step 6: Final answer
    x = 2,352.06

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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.