Home / 5,125.20-7,079.58-4,930.80

Finding the Fourth Proportional to 5,125.20, 7,079.58 and 4,930.80

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Solution

The fourth proportional to 5,125.20, 7,079.58 and 4,930.80 is: 6,811.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,125.20 : 7,079.58 = 4,930.80 : x
  2. Step 2: Convert to fraction form
    5,125.20/7,079.58 = 4,930.80/x
  3. Step 3: Cross multiply
    5,125.20x = 7,079.58 × 4,930.80
  4. Step 4: Simplify right side
    5,125.20x = 34,907,993.06
  5. Step 5: Solve for x
    x = 34,907,993.06/5,125.20
  6. Step 6: Final answer
    x = 6,811.05

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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.