Home / 1,422.91-2,134.07-435.56

Finding the Fourth Proportional to 1,422.91, 2,134.07 and 435.56

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Solution

The fourth proportional to 1,422.91, 2,134.07 and 435.56 is: 653.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,422.91 : 2,134.07 = 435.56 : x
  2. Step 2: Convert to fraction form
    1,422.91/2,134.07 = 435.56/x
  3. Step 3: Cross multiply
    1,422.91x = 2,134.07 × 435.56
  4. Step 4: Simplify right side
    1,422.91x = 929,515.53
  5. Step 5: Solve for x
    x = 929,515.53/1,422.91
  6. Step 6: Final answer
    x = 653.25

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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.