Home / 7,120.68-10,683.33-3,423.20

Finding the Fourth Proportional to 7,120.68, 10,683.33 and 3,423.20

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Solution

The fourth proportional to 7,120.68, 10,683.33 and 3,423.20 is: 5,135.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,120.68 : 10,683.33 = 3,423.20 : x
  2. Step 2: Convert to fraction form
    7,120.68/10,683.33 = 3,423.20/x
  3. Step 3: Cross multiply
    7,120.68x = 10,683.33 × 3,423.20
  4. Step 4: Simplify right side
    7,120.68x = 36,571,213.15
  5. Step 5: Solve for x
    x = 36,571,213.15/7,120.68
  6. Step 6: Final answer
    x = 5,135.91

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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.