Home / 2,659.19-3,990.24-1,272.33

Finding the Fourth Proportional to 2,659.19, 3,990.24 and 1,272.33

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Solution

The fourth proportional to 2,659.19, 3,990.24 and 1,272.33 is: 1,909.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,659.19 : 3,990.24 = 1,272.33 : x
  2. Step 2: Convert to fraction form
    2,659.19/3,990.24 = 1,272.33/x
  3. Step 3: Cross multiply
    2,659.19x = 3,990.24 × 1,272.33
  4. Step 4: Simplify right side
    2,659.19x = 5,076,902.06
  5. Step 5: Solve for x
    x = 5,076,902.06/2,659.19
  6. Step 6: Final answer
    x = 1,909.19

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1.5x scale

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.