Home / 7,850.12-11,775.18-2,659.64

Finding the Fourth Proportional to 7,850.12, 11,775.18 and 2,659.64

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Solution

The fourth proportional to 7,850.12, 11,775.18 and 2,659.64 is: 3,989.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,850.12 : 11,775.18 = 2,659.64 : x
  2. Step 2: Convert to fraction form
    7,850.12/11,775.18 = 2,659.64/x
  3. Step 3: Cross multiply
    7,850.12x = 11,775.18 × 2,659.64
  4. Step 4: Simplify right side
    7,850.12x = 31,317,739.74
  5. Step 5: Solve for x
    x = 31,317,739.74/7,850.12
  6. Step 6: Final answer
    x = 3,989.46

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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.