Home / 1,434.15-2,151.16-394.26

Finding the Fourth Proportional to 1,434.15, 2,151.16 and 394.26

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Solution

The fourth proportional to 1,434.15, 2,151.16 and 394.26 is: 591.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,434.15 : 2,151.16 = 394.26 : x
  2. Step 2: Convert to fraction form
    1,434.15/2,151.16 = 394.26/x
  3. Step 3: Cross multiply
    1,434.15x = 2,151.16 × 394.26
  4. Step 4: Simplify right side
    1,434.15x = 848,116.34
  5. Step 5: Solve for x
    x = 848,116.34/1,434.15
  6. Step 6: Final answer
    x = 591.37

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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.