Home / 8,127.81-12,190.46-2,580.43

Finding the Fourth Proportional to 8,127.81, 12,190.46 and 2,580.43

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Solution

The fourth proportional to 8,127.81, 12,190.46 and 2,580.43 is: 3,870.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,127.81 : 12,190.46 = 2,580.43 : x
  2. Step 2: Convert to fraction form
    8,127.81/12,190.46 = 2,580.43/x
  3. Step 3: Cross multiply
    8,127.81x = 12,190.46 × 2,580.43
  4. Step 4: Simplify right side
    8,127.81x = 31,456,628.70
  5. Step 5: Solve for x
    x = 31,456,628.70/8,127.81
  6. Step 6: Final answer
    x = 3,870.25

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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.