Home / 7,125.20-10,668.60-5,166.80

Finding the Fourth Proportional to 7,125.20, 10,668.60 and 5,166.80

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Solution

The fourth proportional to 7,125.20, 10,668.60 and 5,166.80 is: 7,736.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,125.20 : 10,668.60 = 5,166.80 : x
  2. Step 2: Convert to fraction form
    7,125.20/10,668.60 = 5,166.80/x
  3. Step 3: Cross multiply
    7,125.20x = 10,668.60 × 5,166.80
  4. Step 4: Simplify right side
    7,125.20x = 55,122,522.48
  5. Step 5: Solve for x
    x = 55,122,522.48/7,125.20
  6. Step 6: Final answer
    x = 7,736.28

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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.