Home / 5,461.06-8,186.74-2,128.54

Finding the Fourth Proportional to 5,461.06, 8,186.74 and 2,128.54

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Solution

The fourth proportional to 5,461.06, 8,186.74 and 2,128.54 is: 3,190.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,461.06 : 8,186.74 = 2,128.54 : x
  2. Step 2: Convert to fraction form
    5,461.06/8,186.74 = 2,128.54/x
  3. Step 3: Cross multiply
    5,461.06x = 8,186.74 × 2,128.54
  4. Step 4: Simplify right side
    5,461.06x = 17,425,803.56
  5. Step 5: Solve for x
    x = 17,425,803.56/5,461.06
  6. Step 6: Final answer
    x = 3,190.92

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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.