Home / 2,040.80-2,816.39-1,255.10

Finding the Fourth Proportional to 2,040.80, 2,816.39 and 1,255.10

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Solution

The fourth proportional to 2,040.80, 2,816.39 and 1,255.10 is: 1,732.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,040.80 : 2,816.39 = 1,255.10 : x
  2. Step 2: Convert to fraction form
    2,040.80/2,816.39 = 1,255.10/x
  3. Step 3: Cross multiply
    2,040.80x = 2,816.39 × 1,255.10
  4. Step 4: Simplify right side
    2,040.80x = 3,534,844.81
  5. Step 5: Solve for x
    x = 3,534,844.81/2,040.80
  6. Step 6: Final answer
    x = 1,732.09

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.