Home / 8,109.04-11,180.24-6,615.44

Finding the Fourth Proportional to 8,109.04, 11,180.24 and 6,615.44

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Solution

The fourth proportional to 8,109.04, 11,180.24 and 6,615.44 is: 9,120.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,109.04 : 11,180.24 = 6,615.44 : x
  2. Step 2: Convert to fraction form
    8,109.04/11,180.24 = 6,615.44/x
  3. Step 3: Cross multiply
    8,109.04x = 11,180.24 × 6,615.44
  4. Step 4: Simplify right side
    8,109.04x = 73,962,206.91
  5. Step 5: Solve for x
    x = 73,962,206.91/8,109.04
  6. Step 6: Final answer
    x = 9,120.96

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.