Home / 3,221.40-4,830.18-1,272.60

Finding the Fourth Proportional to 3,221.40, 4,830.18 and 1,272.60

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Solution

The fourth proportional to 3,221.40, 4,830.18 and 1,272.60 is: 1,908.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,221.40 : 4,830.18 = 1,272.60 : x
  2. Step 2: Convert to fraction form
    3,221.40/4,830.18 = 1,272.60/x
  3. Step 3: Cross multiply
    3,221.40x = 4,830.18 × 1,272.60
  4. Step 4: Simplify right side
    3,221.40x = 6,146,887.07
  5. Step 5: Solve for x
    x = 6,146,887.07/3,221.40
  6. Step 6: Final answer
    x = 1,908.14

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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.