Home / 6,021.12-8,321.52-5,428.20

Finding the Fourth Proportional to 6,021.12, 8,321.52 and 5,428.20

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Solution

The fourth proportional to 6,021.12, 8,321.52 and 5,428.20 is: 7,502.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,021.12 : 8,321.52 = 5,428.20 : x
  2. Step 2: Convert to fraction form
    6,021.12/8,321.52 = 5,428.20/x
  3. Step 3: Cross multiply
    6,021.12x = 8,321.52 × 5,428.20
  4. Step 4: Simplify right side
    6,021.12x = 45,170,874.86
  5. Step 5: Solve for x
    x = 45,170,874.86/6,021.12
  6. Step 6: Final answer
    x = 7,502.07

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.