Home / 2,156.21-2,975.62-1,684.66

Finding the Fourth Proportional to 2,156.21, 2,975.62 and 1,684.66

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Solution

The fourth proportional to 2,156.21, 2,975.62 and 1,684.66 is: 2,324.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,156.21 : 2,975.62 = 1,684.66 : x
  2. Step 2: Convert to fraction form
    2,156.21/2,975.62 = 1,684.66/x
  3. Step 3: Cross multiply
    2,156.21x = 2,975.62 × 1,684.66
  4. Step 4: Simplify right side
    2,156.21x = 5,012,889.60
  5. Step 5: Solve for x
    x = 5,012,889.60/2,156.21
  6. Step 6: Final answer
    x = 2,324.86

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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.