Home / 6,077.20-9,115.80-5,126.80

Finding the Fourth Proportional to 6,077.20, 9,115.80 and 5,126.80

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Solution

The fourth proportional to 6,077.20, 9,115.80 and 5,126.80 is: 7,690.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,077.20 : 9,115.80 = 5,126.80 : x
  2. Step 2: Convert to fraction form
    6,077.20/9,115.80 = 5,126.80/x
  3. Step 3: Cross multiply
    6,077.20x = 9,115.80 × 5,126.80
  4. Step 4: Simplify right side
    6,077.20x = 46,734,883.44
  5. Step 5: Solve for x
    x = 46,734,883.44/6,077.20
  6. Step 6: Final answer
    x = 7,690.20

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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.