Home / 7,709.17-11,563.80-2,779.60

Finding the Fourth Proportional to 7,709.17, 11,563.80 and 2,779.60

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Solution

The fourth proportional to 7,709.17, 11,563.80 and 2,779.60 is: 4,169.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,709.17 : 11,563.80 = 2,779.60 : x
  2. Step 2: Convert to fraction form
    7,709.17/11,563.80 = 2,779.60/x
  3. Step 3: Cross multiply
    7,709.17x = 11,563.80 × 2,779.60
  4. Step 4: Simplify right side
    7,709.17x = 32,142,738.48
  5. Step 5: Solve for x
    x = 32,142,738.48/7,709.17
  6. Step 6: Final answer
    x = 4,169.42

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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.