Home / 7,811.10-11,717.68-2,884.20

Finding the Fourth Proportional to 7,811.10, 11,717.68 and 2,884.20

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Solution

The fourth proportional to 7,811.10, 11,717.68 and 2,884.20 is: 4,326.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,811.10 : 11,717.68 = 2,884.20 : x
  2. Step 2: Convert to fraction form
    7,811.10/11,717.68 = 2,884.20/x
  3. Step 3: Cross multiply
    7,811.10x = 11,717.68 × 2,884.20
  4. Step 4: Simplify right side
    7,811.10x = 33,796,125.45
  5. Step 5: Solve for x
    x = 33,796,125.45/7,811.10
  6. Step 6: Final answer
    x = 4,326.68

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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.