Home / 8,928.24-12,320.87-5,151.36

Finding the Fourth Proportional to 8,928.24, 12,320.87 and 5,151.36

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Solution

The fourth proportional to 8,928.24, 12,320.87 and 5,151.36 is: 7,108.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,928.24 : 12,320.87 = 5,151.36 : x
  2. Step 2: Convert to fraction form
    8,928.24/12,320.87 = 5,151.36/x
  3. Step 3: Cross multiply
    8,928.24x = 12,320.87 × 5,151.36
  4. Step 4: Simplify right side
    8,928.24x = 63,469,236.88
  5. Step 5: Solve for x
    x = 63,469,236.88/8,928.24
  6. Step 6: Final answer
    x = 7,108.82

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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.