Home / 2,505.30-3,756.60-1,042.80

Finding the Fourth Proportional to 2,505.30, 3,756.60 and 1,042.80

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Solution

The fourth proportional to 2,505.30, 3,756.60 and 1,042.80 is: 1,563.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,505.30 : 3,756.60 = 1,042.80 : x
  2. Step 2: Convert to fraction form
    2,505.30/3,756.60 = 1,042.80/x
  3. Step 3: Cross multiply
    2,505.30x = 3,756.60 × 1,042.80
  4. Step 4: Simplify right side
    2,505.30x = 3,917,382.48
  5. Step 5: Solve for x
    x = 3,917,382.48/2,505.30
  6. Step 6: Final answer
    x = 1,563.64

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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.