Home / 1,434.14-2,151.17-394.20

Finding the Fourth Proportional to 1,434.14, 2,151.17 and 394.20

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Solution

The fourth proportional to 1,434.14, 2,151.17 and 394.20 is: 591.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,434.14 : 2,151.17 = 394.20 : x
  2. Step 2: Convert to fraction form
    1,434.14/2,151.17 = 394.20/x
  3. Step 3: Cross multiply
    1,434.14x = 2,151.17 × 394.20
  4. Step 4: Simplify right side
    1,434.14x = 847,989.24
  5. Step 5: Solve for x
    x = 847,989.24/1,434.14
  6. Step 6: Final answer
    x = 591.29

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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.