Home / 7,751.12-11,629.79-2,821.10

Finding the Fourth Proportional to 7,751.12, 11,629.79 and 2,821.10

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Solution

The fourth proportional to 7,751.12, 11,629.79 and 2,821.10 is: 4,232.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,751.12 : 11,629.79 = 2,821.10 : x
  2. Step 2: Convert to fraction form
    7,751.12/11,629.79 = 2,821.10/x
  3. Step 3: Cross multiply
    7,751.12x = 11,629.79 × 2,821.10
  4. Step 4: Simplify right side
    7,751.12x = 32,808,786.46
  5. Step 5: Solve for x
    x = 32,808,786.46/7,751.12
  6. Step 6: Final answer
    x = 4,232.78

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.