Home / 2,121.41-3,182.93-1,025.68

Finding the Fourth Proportional to 2,121.41, 3,182.93 and 1,025.68

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Solution

The fourth proportional to 2,121.41, 3,182.93 and 1,025.68 is: 1,538.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,121.41 : 3,182.93 = 1,025.68 : x
  2. Step 2: Convert to fraction form
    2,121.41/3,182.93 = 1,025.68/x
  3. Step 3: Cross multiply
    2,121.41x = 3,182.93 × 1,025.68
  4. Step 4: Simplify right side
    2,121.41x = 3,264,667.64
  5. Step 5: Solve for x
    x = 3,264,667.64/2,121.41
  6. Step 6: Final answer
    x = 1,538.91

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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.