Home / 3,660.31-5,051.22-1,981.75

Finding the Fourth Proportional to 3,660.31, 5,051.22 and 1,981.75

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Solution

The fourth proportional to 3,660.31, 5,051.22 and 1,981.75 is: 2,734.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,660.31 : 5,051.22 = 1,981.75 : x
  2. Step 2: Convert to fraction form
    3,660.31/5,051.22 = 1,981.75/x
  3. Step 3: Cross multiply
    3,660.31x = 5,051.22 × 1,981.75
  4. Step 4: Simplify right side
    3,660.31x = 10,010,255.24
  5. Step 5: Solve for x
    x = 10,010,255.24/3,660.31
  6. Step 6: Final answer
    x = 2,734.81

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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.