Home / 3,130.20-4,696.92-1,669.80

Finding the Fourth Proportional to 3,130.20, 4,696.92 and 1,669.80

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Solution

The fourth proportional to 3,130.20, 4,696.92 and 1,669.80 is: 2,505.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,130.20 : 4,696.92 = 1,669.80 : x
  2. Step 2: Convert to fraction form
    3,130.20/4,696.92 = 1,669.80/x
  3. Step 3: Cross multiply
    3,130.20x = 4,696.92 × 1,669.80
  4. Step 4: Simplify right side
    3,130.20x = 7,842,917.02
  5. Step 5: Solve for x
    x = 7,842,917.02/3,130.20
  6. Step 6: Final answer
    x = 2,505.56

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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.