Home / 5,851.20-8,792.40-3,220.80

Finding the Fourth Proportional to 5,851.20, 8,792.40 and 3,220.80

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Solution

The fourth proportional to 5,851.20, 8,792.40 and 3,220.80 is: 4,839.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,851.20 : 8,792.40 = 3,220.80 : x
  2. Step 2: Convert to fraction form
    5,851.20/8,792.40 = 3,220.80/x
  3. Step 3: Cross multiply
    5,851.20x = 8,792.40 × 3,220.80
  4. Step 4: Simplify right side
    5,851.20x = 28,318,561.92
  5. Step 5: Solve for x
    x = 28,318,561.92/5,851.20
  6. Step 6: Final answer
    x = 4,839.79

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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.