Home / 7,856.12-11,786.20-2,309.64

Finding the Fourth Proportional to 7,856.12, 11,786.20 and 2,309.64

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Solution

The fourth proportional to 7,856.12, 11,786.20 and 2,309.64 is: 3,465.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,856.12 : 11,786.20 = 2,309.64 : x
  2. Step 2: Convert to fraction form
    7,856.12/11,786.20 = 2,309.64/x
  3. Step 3: Cross multiply
    7,856.12x = 11,786.20 × 2,309.64
  4. Step 4: Simplify right side
    7,856.12x = 27,221,878.97
  5. Step 5: Solve for x
    x = 27,221,878.97/7,856.12
  6. Step 6: Final answer
    x = 3,465.06

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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.