Home / 1,369.26-2,054.28-395.40

Finding the Fourth Proportional to 1,369.26, 2,054.28 and 395.40

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Solution

The fourth proportional to 1,369.26, 2,054.28 and 395.40 is: 593.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,369.26 : 2,054.28 = 395.40 : x
  2. Step 2: Convert to fraction form
    1,369.26/2,054.28 = 395.40/x
  3. Step 3: Cross multiply
    1,369.26x = 2,054.28 × 395.40
  4. Step 4: Simplify right side
    1,369.26x = 812,262.31
  5. Step 5: Solve for x
    x = 812,262.31/1,369.26
  6. Step 6: Final answer
    x = 593.21

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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.