Home / 7,821.76-11,732.64-3,201.60

Finding the Fourth Proportional to 7,821.76, 11,732.64 and 3,201.60

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Solution

The fourth proportional to 7,821.76, 11,732.64 and 3,201.60 is: 4,802.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,821.76 : 11,732.64 = 3,201.60 : x
  2. Step 2: Convert to fraction form
    7,821.76/11,732.64 = 3,201.60/x
  3. Step 3: Cross multiply
    7,821.76x = 11,732.64 × 3,201.60
  4. Step 4: Simplify right side
    7,821.76x = 37,563,220.22
  5. Step 5: Solve for x
    x = 37,563,220.22/7,821.76
  6. Step 6: Final answer
    x = 4,802.40

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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.