Home / 8,739.57-13,109.01-2,165.58

Finding the Fourth Proportional to 8,739.57, 13,109.01 and 2,165.58

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Solution

The fourth proportional to 8,739.57, 13,109.01 and 2,165.58 is: 3,248.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,739.57 : 13,109.01 = 2,165.58 : x
  2. Step 2: Convert to fraction form
    8,739.57/13,109.01 = 2,165.58/x
  3. Step 3: Cross multiply
    8,739.57x = 13,109.01 × 2,165.58
  4. Step 4: Simplify right side
    8,739.57x = 28,388,609.88
  5. Step 5: Solve for x
    x = 28,388,609.88/8,739.57
  6. Step 6: Final answer
    x = 3,248.28

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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.