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Finding the Fourth Proportional to 2,673.56, 3,689.70 and 1,554.80

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Solution

The fourth proportional to 2,673.56, 3,689.70 and 1,554.80 is: 2,145.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,673.56 : 3,689.70 = 1,554.80 : x
  2. Step 2: Convert to fraction form
    2,673.56/3,689.70 = 1,554.80/x
  3. Step 3: Cross multiply
    2,673.56x = 3,689.70 × 1,554.80
  4. Step 4: Simplify right side
    2,673.56x = 5,736,745.56
  5. Step 5: Solve for x
    x = 5,736,745.56/2,673.56
  6. Step 6: Final answer
    x = 2,145.73

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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.