Home / 6,720.20-10,061.10-4,128.20

Finding the Fourth Proportional to 6,720.20, 10,061.10 and 4,128.20

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Solution

The fourth proportional to 6,720.20, 10,061.10 and 4,128.20 is: 6,180.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,720.20 : 10,061.10 = 4,128.20 : x
  2. Step 2: Convert to fraction form
    6,720.20/10,061.10 = 4,128.20/x
  3. Step 3: Cross multiply
    6,720.20x = 10,061.10 × 4,128.20
  4. Step 4: Simplify right side
    6,720.20x = 41,534,233.02
  5. Step 5: Solve for x
    x = 41,534,233.02/6,720.20
  6. Step 6: Final answer
    x = 6,180.51

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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.