Home / 8,126.87-12,190.64-2,580.09

Finding the Fourth Proportional to 8,126.87, 12,190.64 and 2,580.09

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Solution

The fourth proportional to 8,126.87, 12,190.64 and 2,580.09 is: 3,870.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,126.87 : 12,190.64 = 2,580.09 : x
  2. Step 2: Convert to fraction form
    8,126.87/12,190.64 = 2,580.09/x
  3. Step 3: Cross multiply
    8,126.87x = 12,190.64 × 2,580.09
  4. Step 4: Simplify right side
    8,126.87x = 31,452,889.74
  5. Step 5: Solve for x
    x = 31,452,889.74/8,126.87
  6. Step 6: Final answer
    x = 3,870.24

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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.