Home / 2,840.75-4,257.52-1,279.08

Finding the Fourth Proportional to 2,840.75, 4,257.52 and 1,279.08

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Solution

The fourth proportional to 2,840.75, 4,257.52 and 1,279.08 is: 1,917.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,840.75 : 4,257.52 = 1,279.08 : x
  2. Step 2: Convert to fraction form
    2,840.75/4,257.52 = 1,279.08/x
  3. Step 3: Cross multiply
    2,840.75x = 4,257.52 × 1,279.08
  4. Step 4: Simplify right side
    2,840.75x = 5,445,708.68
  5. Step 5: Solve for x
    x = 5,445,708.68/2,840.75
  6. Step 6: Final answer
    x = 1,917.00

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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.