Home / 3,128.02-4,690.20-1,826.75

Finding the Fourth Proportional to 3,128.02, 4,690.20 and 1,826.75

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Solution

The fourth proportional to 3,128.02, 4,690.20 and 1,826.75 is: 2,739.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,128.02 : 4,690.20 = 1,826.75 : x
  2. Step 2: Convert to fraction form
    3,128.02/4,690.20 = 1,826.75/x
  3. Step 3: Cross multiply
    3,128.02x = 4,690.20 × 1,826.75
  4. Step 4: Simplify right side
    3,128.02x = 8,567,822.85
  5. Step 5: Solve for x
    x = 8,567,822.85/3,128.02
  6. Step 6: Final answer
    x = 2,739.06

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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.