Home / 2,542.20-3,813.12-693.42

Finding the Fourth Proportional to 2,542.20, 3,813.12 and 693.42

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Solution

The fourth proportional to 2,542.20, 3,813.12 and 693.42 is: 1,040.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,542.20 : 3,813.12 = 693.42 : x
  2. Step 2: Convert to fraction form
    2,542.20/3,813.12 = 693.42/x
  3. Step 3: Cross multiply
    2,542.20x = 3,813.12 × 693.42
  4. Step 4: Simplify right side
    2,542.20x = 2,644,093.67
  5. Step 5: Solve for x
    x = 2,644,093.67/2,542.20
  6. Step 6: Final answer
    x = 1,040.08

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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.