Home / 6,812.24-9,401.60-4,161.20

Finding the Fourth Proportional to 6,812.24, 9,401.60 and 4,161.20

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Solution

The fourth proportional to 6,812.24, 9,401.60 and 4,161.20 is: 5,742.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,812.24 : 9,401.60 = 4,161.20 : x
  2. Step 2: Convert to fraction form
    6,812.24/9,401.60 = 4,161.20/x
  3. Step 3: Cross multiply
    6,812.24x = 9,401.60 × 4,161.20
  4. Step 4: Simplify right side
    6,812.24x = 39,121,937.92
  5. Step 5: Solve for x
    x = 39,121,937.92/6,812.24
  6. Step 6: Final answer
    x = 5,742.89

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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.