Home / 10,719.20-16,079.60-3,792.80

Finding the Fourth Proportional to 10,719.20, 16,079.60 and 3,792.80

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Solution

The fourth proportional to 10,719.20, 16,079.60 and 3,792.80 is: 5,689.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,719.20 : 16,079.60 = 3,792.80 : x
  2. Step 2: Convert to fraction form
    10,719.20/16,079.60 = 3,792.80/x
  3. Step 3: Cross multiply
    10,719.20x = 16,079.60 × 3,792.80
  4. Step 4: Simplify right side
    10,719.20x = 60,986,706.88
  5. Step 5: Solve for x
    x = 60,986,706.88/10,719.20
  6. Step 6: Final answer
    x = 5,689.48

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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.