Home / 8,127.56-12,190.09-2,580.18

Finding the Fourth Proportional to 8,127.56, 12,190.09 and 2,580.18

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Solution

The fourth proportional to 8,127.56, 12,190.09 and 2,580.18 is: 3,869.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,127.56 : 12,190.09 = 2,580.18 : x
  2. Step 2: Convert to fraction form
    8,127.56/12,190.09 = 2,580.18/x
  3. Step 3: Cross multiply
    8,127.56x = 12,190.09 × 2,580.18
  4. Step 4: Simplify right side
    8,127.56x = 31,452,574.25
  5. Step 5: Solve for x
    x = 31,452,574.25/8,127.56
  6. Step 6: Final answer
    x = 3,869.87

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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.