Home / 5,112.60-7,668.90-2,520.60

Finding the Fourth Proportional to 5,112.60, 7,668.90 and 2,520.60

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Solution

The fourth proportional to 5,112.60, 7,668.90 and 2,520.60 is: 3,780.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,112.60 : 7,668.90 = 2,520.60 : x
  2. Step 2: Convert to fraction form
    5,112.60/7,668.90 = 2,520.60/x
  3. Step 3: Cross multiply
    5,112.60x = 7,668.90 × 2,520.60
  4. Step 4: Simplify right side
    5,112.60x = 19,330,229.34
  5. Step 5: Solve for x
    x = 19,330,229.34/5,112.60
  6. Step 6: Final answer
    x = 3,780.90

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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.