Home / 3,243.20-4,861.56-1,779.32

Finding the Fourth Proportional to 3,243.20, 4,861.56 and 1,779.32

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Solution

The fourth proportional to 3,243.20, 4,861.56 and 1,779.32 is: 2,667.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,243.20 : 4,861.56 = 1,779.32 : x
  2. Step 2: Convert to fraction form
    3,243.20/4,861.56 = 1,779.32/x
  3. Step 3: Cross multiply
    3,243.20x = 4,861.56 × 1,779.32
  4. Step 4: Simplify right side
    3,243.20x = 8,650,270.94
  5. Step 5: Solve for x
    x = 8,650,270.94/3,243.20
  6. Step 6: Final answer
    x = 2,667.20

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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.