Home / 8,107.28-11,189.10-4,571.60

Finding the Fourth Proportional to 8,107.28, 11,189.10 and 4,571.60

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Solution

The fourth proportional to 8,107.28, 11,189.10 and 4,571.60 is: 6,309.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,107.28 : 11,189.10 = 4,571.60 : x
  2. Step 2: Convert to fraction form
    8,107.28/11,189.10 = 4,571.60/x
  3. Step 3: Cross multiply
    8,107.28x = 11,189.10 × 4,571.60
  4. Step 4: Simplify right side
    8,107.28x = 51,152,089.56
  5. Step 5: Solve for x
    x = 51,152,089.56/8,107.28
  6. Step 6: Final answer
    x = 6,309.40

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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.