Home / 6,619.68-9,930.74-2,177.60

Finding the Fourth Proportional to 6,619.68, 9,930.74 and 2,177.60

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Solution

The fourth proportional to 6,619.68, 9,930.74 and 2,177.60 is: 3,266.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,619.68 : 9,930.74 = 2,177.60 : x
  2. Step 2: Convert to fraction form
    6,619.68/9,930.74 = 2,177.60/x
  3. Step 3: Cross multiply
    6,619.68x = 9,930.74 × 2,177.60
  4. Step 4: Simplify right side
    6,619.68x = 21,625,179.42
  5. Step 5: Solve for x
    x = 21,625,179.42/6,619.68
  6. Step 6: Final answer
    x = 3,266.80

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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.