Home / 5,161.60-7,121.20-3,299.68

Finding the Fourth Proportional to 5,161.60, 7,121.20 and 3,299.68

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Solution

The fourth proportional to 5,161.60, 7,121.20 and 3,299.68 is: 4,552.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,161.60 : 7,121.20 = 3,299.68 : x
  2. Step 2: Convert to fraction form
    5,161.60/7,121.20 = 3,299.68/x
  3. Step 3: Cross multiply
    5,161.60x = 7,121.20 × 3,299.68
  4. Step 4: Simplify right side
    5,161.60x = 23,497,681.22
  5. Step 5: Solve for x
    x = 23,497,681.22/5,161.60
  6. Step 6: Final answer
    x = 4,552.40

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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.