Home / 2,167.90-2,991.97-1,328.73

Finding the Fourth Proportional to 2,167.90, 2,991.97 and 1,328.73

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Solution

The fourth proportional to 2,167.90, 2,991.97 and 1,328.73 is: 1,833.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,167.90 : 2,991.97 = 1,328.73 : x
  2. Step 2: Convert to fraction form
    2,167.90/2,991.97 = 1,328.73/x
  3. Step 3: Cross multiply
    2,167.90x = 2,991.97 × 1,328.73
  4. Step 4: Simplify right side
    2,167.90x = 3,975,510.74
  5. Step 5: Solve for x
    x = 3,975,510.74/2,167.90
  6. Step 6: Final answer
    x = 1,833.80

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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.