Home / 3,783.20-5,666.70-3,135.20

Finding the Fourth Proportional to 3,783.20, 5,666.70 and 3,135.20

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Solution

The fourth proportional to 3,783.20, 5,666.70 and 3,135.20 is: 4,696.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,783.20 : 5,666.70 = 3,135.20 : x
  2. Step 2: Convert to fraction form
    3,783.20/5,666.70 = 3,135.20/x
  3. Step 3: Cross multiply
    3,783.20x = 5,666.70 × 3,135.20
  4. Step 4: Simplify right side
    3,783.20x = 17,766,237.84
  5. Step 5: Solve for x
    x = 17,766,237.84/3,783.20
  6. Step 6: Final answer
    x = 4,696.09

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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.