Home / 8,109.79-11,189.58-4,923.01

Finding the Fourth Proportional to 8,109.79, 11,189.58 and 4,923.01

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Solution

The fourth proportional to 8,109.79, 11,189.58 and 4,923.01 is: 6,792.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,109.79 : 11,189.58 = 4,923.01 : x
  2. Step 2: Convert to fraction form
    8,109.79/11,189.58 = 4,923.01/x
  3. Step 3: Cross multiply
    8,109.79x = 11,189.58 × 4,923.01
  4. Step 4: Simplify right side
    8,109.79x = 55,086,414.24
  5. Step 5: Solve for x
    x = 55,086,414.24/8,109.79
  6. Step 6: Final answer
    x = 6,792.58

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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.