Home / 2,118.36-3,171.67-1,596.78

Finding the Fourth Proportional to 2,118.36, 3,171.67 and 1,596.78

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Solution

The fourth proportional to 2,118.36, 3,171.67 and 1,596.78 is: 2,390.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,118.36 : 3,171.67 = 1,596.78 : x
  2. Step 2: Convert to fraction form
    2,118.36/3,171.67 = 1,596.78/x
  3. Step 3: Cross multiply
    2,118.36x = 3,171.67 × 1,596.78
  4. Step 4: Simplify right side
    2,118.36x = 5,064,454.26
  5. Step 5: Solve for x
    x = 5,064,454.26/2,118.36
  6. Step 6: Final answer
    x = 2,390.74

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1.5x scale

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.