Home / 1,676.20-2,311.86-1,256.68

Finding the Fourth Proportional to 1,676.20, 2,311.86 and 1,256.68

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Solution

The fourth proportional to 1,676.20, 2,311.86 and 1,256.68 is: 1,733.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,676.20 : 2,311.86 = 1,256.68 : x
  2. Step 2: Convert to fraction form
    1,676.20/2,311.86 = 1,256.68/x
  3. Step 3: Cross multiply
    1,676.20x = 2,311.86 × 1,256.68
  4. Step 4: Simplify right side
    1,676.20x = 2,905,268.22
  5. Step 5: Solve for x
    x = 2,905,268.22/1,676.20
  6. Step 6: Final answer
    x = 1,733.25

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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.