Home / 2,122.62-3,177.33-1,146.30

Finding the Fourth Proportional to 2,122.62, 3,177.33 and 1,146.30

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Solution

The fourth proportional to 2,122.62, 3,177.33 and 1,146.30 is: 1,715.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,122.62 : 3,177.33 = 1,146.30 : x
  2. Step 2: Convert to fraction form
    2,122.62/3,177.33 = 1,146.30/x
  3. Step 3: Cross multiply
    2,122.62x = 3,177.33 × 1,146.30
  4. Step 4: Simplify right side
    2,122.62x = 3,642,173.38
  5. Step 5: Solve for x
    x = 3,642,173.38/2,122.62
  6. Step 6: Final answer
    x = 1,715.89

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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.