Home / 5,115.76-7,675.46-2,651.74

Finding the Fourth Proportional to 5,115.76, 7,675.46 and 2,651.74

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Solution

The fourth proportional to 5,115.76, 7,675.46 and 2,651.74 is: 3,978.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,115.76 : 7,675.46 = 2,651.74 : x
  2. Step 2: Convert to fraction form
    5,115.76/7,675.46 = 2,651.74/x
  3. Step 3: Cross multiply
    5,115.76x = 7,675.46 × 2,651.74
  4. Step 4: Simplify right side
    5,115.76x = 20,353,301.80
  5. Step 5: Solve for x
    x = 20,353,301.80/5,115.76
  6. Step 6: Final answer
    x = 3,978.55

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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.