Home / 7,225.39-10,829.71-3,321.60

Finding the Fourth Proportional to 7,225.39, 10,829.71 and 3,321.60

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Solution

The fourth proportional to 7,225.39, 10,829.71 and 3,321.60 is: 4,978.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,225.39 : 10,829.71 = 3,321.60 : x
  2. Step 2: Convert to fraction form
    7,225.39/10,829.71 = 3,321.60/x
  3. Step 3: Cross multiply
    7,225.39x = 10,829.71 × 3,321.60
  4. Step 4: Simplify right side
    7,225.39x = 35,971,964.74
  5. Step 5: Solve for x
    x = 35,971,964.74/7,225.39
  6. Step 6: Final answer
    x = 4,978.55

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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.