Home / 2,422.14-3,632.82-690.36

Finding the Fourth Proportional to 2,422.14, 3,632.82 and 690.36

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Solution

The fourth proportional to 2,422.14, 3,632.82 and 690.36 is: 1,035.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,422.14 : 3,632.82 = 690.36 : x
  2. Step 2: Convert to fraction form
    2,422.14/3,632.82 = 690.36/x
  3. Step 3: Cross multiply
    2,422.14x = 3,632.82 × 690.36
  4. Step 4: Simplify right side
    2,422.14x = 2,507,953.62
  5. Step 5: Solve for x
    x = 2,507,953.62/2,422.14
  6. Step 6: Final answer
    x = 1,035.43

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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.