Home / 9,179.52-12,669.12-5,200.80

Finding the Fourth Proportional to 9,179.52, 12,669.12 and 5,200.80

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Solution

The fourth proportional to 9,179.52, 12,669.12 and 5,200.80 is: 7,177.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,179.52 : 12,669.12 = 5,200.80 : x
  2. Step 2: Convert to fraction form
    9,179.52/12,669.12 = 5,200.80/x
  3. Step 3: Cross multiply
    9,179.52x = 12,669.12 × 5,200.80
  4. Step 4: Simplify right side
    9,179.52x = 65,889,559.30
  5. Step 5: Solve for x
    x = 65,889,559.30/9,179.52
  6. Step 6: Final answer
    x = 7,177.89

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.