Home / 3,145.03-4,340.19-1,728.77

Finding the Fourth Proportional to 3,145.03, 4,340.19 and 1,728.77

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Solution

The fourth proportional to 3,145.03, 4,340.19 and 1,728.77 is: 2,385.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,145.03 : 4,340.19 = 1,728.77 : x
  2. Step 2: Convert to fraction form
    3,145.03/4,340.19 = 1,728.77/x
  3. Step 3: Cross multiply
    3,145.03x = 4,340.19 × 1,728.77
  4. Step 4: Simplify right side
    3,145.03x = 7,503,197.08
  5. Step 5: Solve for x
    x = 7,503,197.08/3,145.03
  6. Step 6: Final answer
    x = 2,385.73

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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.