Home / 7,419.40-11,129.10-6,166.60

Finding the Fourth Proportional to 7,419.40, 11,129.10 and 6,166.60

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Solution

The fourth proportional to 7,419.40, 11,129.10 and 6,166.60 is: 9,249.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,419.40 : 11,129.10 = 6,166.60 : x
  2. Step 2: Convert to fraction form
    7,419.40/11,129.10 = 6,166.60/x
  3. Step 3: Cross multiply
    7,419.40x = 11,129.10 × 6,166.60
  4. Step 4: Simplify right side
    7,419.40x = 68,628,708.06
  5. Step 5: Solve for x
    x = 68,628,708.06/7,419.40
  6. Step 6: Final answer
    x = 9,249.90

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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.