Home / 3,128.73-4,315.53-1,950.36

Finding the Fourth Proportional to 3,128.73, 4,315.53 and 1,950.36

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Solution

The fourth proportional to 3,128.73, 4,315.53 and 1,950.36 is: 2,690.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,128.73 : 4,315.53 = 1,950.36 : x
  2. Step 2: Convert to fraction form
    3,128.73/4,315.53 = 1,950.36/x
  3. Step 3: Cross multiply
    3,128.73x = 4,315.53 × 1,950.36
  4. Step 4: Simplify right side
    3,128.73x = 8,416,837.09
  5. Step 5: Solve for x
    x = 8,416,837.09/3,128.73
  6. Step 6: Final answer
    x = 2,690.18

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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.