Home / 3,678.60-5,513.94-1,486.20

Finding the Fourth Proportional to 3,678.60, 5,513.94 and 1,486.20

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Solution

The fourth proportional to 3,678.60, 5,513.94 and 1,486.20 is: 2,227.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,678.60 : 5,513.94 = 1,486.20 : x
  2. Step 2: Convert to fraction form
    3,678.60/5,513.94 = 1,486.20/x
  3. Step 3: Cross multiply
    3,678.60x = 5,513.94 × 1,486.20
  4. Step 4: Simplify right side
    3,678.60x = 8,194,817.63
  5. Step 5: Solve for x
    x = 8,194,817.63/3,678.60
  6. Step 6: Final answer
    x = 2,227.70

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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.