Home / 7,981.80-11,015.09-4,624.75

Finding the Fourth Proportional to 7,981.80, 11,015.09 and 4,624.75

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Solution

The fourth proportional to 7,981.80, 11,015.09 and 4,624.75 is: 6,382.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,981.80 : 11,015.09 = 4,624.75 : x
  2. Step 2: Convert to fraction form
    7,981.80/11,015.09 = 4,624.75/x
  3. Step 3: Cross multiply
    7,981.80x = 11,015.09 × 4,624.75
  4. Step 4: Simplify right side
    7,981.80x = 50,942,037.48
  5. Step 5: Solve for x
    x = 50,942,037.48/7,981.80
  6. Step 6: Final answer
    x = 6,382.27

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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.