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Finding the Fourth Proportional to 7,165.47, 10,739.96 and 2,779.22

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Solution

The fourth proportional to 7,165.47, 10,739.96 and 2,779.22 is: 4,165.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,165.47 : 10,739.96 = 2,779.22 : x
  2. Step 2: Convert to fraction form
    7,165.47/10,739.96 = 2,779.22/x
  3. Step 3: Cross multiply
    7,165.47x = 10,739.96 × 2,779.22
  4. Step 4: Simplify right side
    7,165.47x = 29,848,735.01
  5. Step 5: Solve for x
    x = 29,848,735.01/7,165.47
  6. Step 6: Final answer
    x = 4,165.63

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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.