Home / 2,254.58-3,111.44-1,259.88

Finding the Fourth Proportional to 2,254.58, 3,111.44 and 1,259.88

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Solution

The fourth proportional to 2,254.58, 3,111.44 and 1,259.88 is: 1,738.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,254.58 : 3,111.44 = 1,259.88 : x
  2. Step 2: Convert to fraction form
    2,254.58/3,111.44 = 1,259.88/x
  3. Step 3: Cross multiply
    2,254.58x = 3,111.44 × 1,259.88
  4. Step 4: Simplify right side
    2,254.58x = 3,920,041.03
  5. Step 5: Solve for x
    x = 3,920,041.03/2,254.58
  6. Step 6: Final answer
    x = 1,738.70

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Half scale
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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.