Home / 8,909.12-12,295.68-5,183.12

Finding the Fourth Proportional to 8,909.12, 12,295.68 and 5,183.12

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Solution

The fourth proportional to 8,909.12, 12,295.68 and 5,183.12 is: 7,153.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,909.12 : 12,295.68 = 5,183.12 : x
  2. Step 2: Convert to fraction form
    8,909.12/12,295.68 = 5,183.12/x
  3. Step 3: Cross multiply
    8,909.12x = 12,295.68 × 5,183.12
  4. Step 4: Simplify right side
    8,909.12x = 63,729,984.92
  5. Step 5: Solve for x
    x = 63,729,984.92/8,909.12
  6. Step 6: Final answer
    x = 7,153.34

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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.