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Finding the Fourth Proportional to 2,621.40, 3,932.10 and 673.59

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Solution

The fourth proportional to 2,621.40, 3,932.10 and 673.59 is: 1,010.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,621.40 : 3,932.10 = 673.59 : x
  2. Step 2: Convert to fraction form
    2,621.40/3,932.10 = 673.59/x
  3. Step 3: Cross multiply
    2,621.40x = 3,932.10 × 673.59
  4. Step 4: Simplify right side
    2,621.40x = 2,648,623.24
  5. Step 5: Solve for x
    x = 2,648,623.24/2,621.40
  6. Step 6: Final answer
    x = 1,010.39

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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.