Home / 8,120.55-12,180.63-5,489.27

Finding the Fourth Proportional to 8,120.55, 12,180.63 and 5,489.27

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Solution

The fourth proportional to 8,120.55, 12,180.63 and 5,489.27 is: 8,233.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,120.55 : 12,180.63 = 5,489.27 : x
  2. Step 2: Convert to fraction form
    8,120.55/12,180.63 = 5,489.27/x
  3. Step 3: Cross multiply
    8,120.55x = 12,180.63 × 5,489.27
  4. Step 4: Simplify right side
    8,120.55x = 66,862,741.32
  5. Step 5: Solve for x
    x = 66,862,741.32/8,120.55
  6. Step 6: Final answer
    x = 8,233.77

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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.