Home / 2,672.90-4,010.55-1,211.30

Finding the Fourth Proportional to 2,672.90, 4,010.55 and 1,211.30

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Solution

The fourth proportional to 2,672.90, 4,010.55 and 1,211.30 is: 1,817.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,672.90 : 4,010.55 = 1,211.30 : x
  2. Step 2: Convert to fraction form
    2,672.90/4,010.55 = 1,211.30/x
  3. Step 3: Cross multiply
    2,672.90x = 4,010.55 × 1,211.30
  4. Step 4: Simplify right side
    2,672.90x = 4,857,979.22
  5. Step 5: Solve for x
    x = 4,857,979.22/2,672.90
  6. Step 6: Final answer
    x = 1,817.49

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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.